When a prophet, Spencer W. Kimball made the following statement at general conference.
"We hope that you who teach in the various organizations, whether on the campuses or in our chapels, will always teach the orthodox truth. We warn you against the dissemination of doctrines which are not according to the scriptures and which are alleged to have been taught by some of the General Authorities of past generations. Such, for instance, is the Adam-God theory. We denounce that theory and hope that everyone will be cautioned against this and other kinds of false doctrine." Kimball, Spencer W. "Our Own Liahona." Ensign (Nov. 1976), p. 77-79.
This was a plain statement that current GAs disagree with the doctine of Adam being God, and that they feel Brigham Young's statements are misunderstood.
Typical Opinions Brigham Expressed:-
"Now hear it, 0 inhabitants of the earth, Jew and Gentile, saint and sinner! When our father Adam came into the Garden of Eden, he came into it with a celestial body, and brought Eve, one of his wives, with him. He helped to make and organize this world. He is Michael, the Archangel, the Ancient of Days, about whom holy men have written and spoken-He is our father and our God, and the only God with whom we have to do." Journal of Discourses, vol. 1, p. 50. (1852)
However in the very NEXT paragraph he stated, "It is true that the earth was organized by three distinct characters, namely, Eloheim, Yahovah, and Michael..." Any illusion that he was proposing Adam (Michael) to be Heavenly Father (Eloheim) is tossed out here. But for better understanding let's proceed anyway.
To try and understand what Brigham must have meant in the first bit I will present some possible ideas. Adam is a god, as are all who accept and follow the gospel of Christ in its fulness (John 10:35). And as he is the first parent in fallen flesh, and we are cut off because of the fall, he is the only god with whom we have to do patriachally (as to get to the Father we must go through the Son, not patriarchally).
Eve was one of his celestial wives, looking backward (ie she now being one of his celestial wives). He brought her with him. But she wasn't one of his celestial wives at the time he brought her.
He is the Ancient of Days, being our first father to live a life of years here (as stated in D&C 27:11).
Of course these are only assumptions of his intent, as he isn't available for comment.
Brigham said "When the Virgin Mary conceived the child Jesus, the Father had begotten him in his own likeness. He was not begotten by the Holy Ghost. And who is the Father? He is the first of the human family; and when he [Christ] took a tabernacle, it was begotten by his Father in heaven, after the same manner as the tabernacles of Cain, Abel, and the rest of the sons and daughters of Adam and Eve....
"Jesus, our elder brother, was begotten in the flesh by the same character that was in the Garden of Eden, and who is our Father in Heaven....
"Now, remember from this time forth, and forever, that Jesus Christ was not begotten by the Holy Ghost." Journal of Discourses. vol. 1, pp. 50-51.
Heavenly Father is the father of the human family (while Adam can be regarded so also).
Heavenly Father was also a character in the garden of Eden when talking to Adam and Eve (I'll quote Brigham on this soon)(even though Adam lived there permanently at the time). So it could be that we should be reading Brigham's statements based on his assumption of the knowledge of the hearers. Others propose that there were errors in recording by those writing his talk down. Either way the following adds insight.
Reading these quotes of Brigham bellow makes it very clear what he thought of Adam and God, and Adam to Christ:-
"We are all the children of Adam and Eve, and they are the offspring of Him who dwells in the heavens, the Highest Intelligence that dwells anywhere that we have any knowledge of."
"The greatest desire in the bosom of our Father Adam, or of his faithful children who are co-workers with God, our Father in Heaven, is to save the inhabitants of the earth" Discourses of Brigham Young. 2nd ed., p. 94.
"How has it transpired that theological truth is thus so widely disseminated? It is because God was once known on the earth among his children of mankind, as we know one another. Adam was as conversant with his Father who placed him upon this earth as we are conversant with our earthly parents. The Father frequently came to visit his son Adam, and talked and walked with him; and the children of Adam were more or less acquainted with him, and the things that pertain to God and to heaven were as familiar among mankind in the first ages of their existence on the earth, as these mountains are to our mountain boys." Discourses of Brigham Young, 2nd ed., p.159
"Our Lord Jesus Christ-the Savior, who has redeemed the world and all things pertaining to it, is the Only Begotten of the Father pertaining to the flesh. He is our Elder Brother, and the Heir of the family, and as such we worship him. He has tasted death for every man, and has paid the debt contracted by our first parents [Adam and Eve]." Discourses of Brigham Young, 2nd ed., p.40.
Now consider the following Scripture references:-
Jude 1:9 "Yet Michael the Archangel, when contending with the devil he disputed about the body of Moses, durst not bring against him a railing accusation, but said, the Lord rebuke thee."
D&C (Doctrine and Covenants) 78:15-16 "That you may come up unto the crown prepared for you, and be made rulers over many kingdoms, saith the Lord God, the Holy One of Zion [Jesus Christ], who hath established the foundations of Adam-ondi-Ahman; Who hath appointed Michael [Adam] your prince, and established his feet, and set him upon high. and given him the keys of salvation under the counsel and direction of the Holy One, who is without beginning of days and end of life."
D&C 29:34 "Wherefore, verily I say unto you that all things unto me are spiritual, and not at any time have I given unto you a law which was temporal; neither any man, nor the children of men; neither Adam, your father, whom I created."
Luke 3:38 "Which was the son of Enos, which was the son of Seth, which was the son of Adam, which was the son of God."
Moses 6:22 "And this is the genealogy of the sons of Adam, who was the son of God, with whom God, himself, conversed."
It is obvious from these latter collections that 1. Brigham Young didn't think Adam was our Heavenly Father or the father of Jesus Christ. And 2. (and most importantly) that the Scriptures oppose such a concept.