The literal words of Jesus as we find them in the Gospels are more important and inspired than Paul's writings in the Pauline Epistles. If this doctrine isn't a deliberate assault on the equal inspiration of all Scripture, it certainly helps lower our defenses against such heresy. When Paul wrote under inspiration, he always agreed with Jesus. Paul's inspired writings and the literal words of Jesus are all God-breathed. They are equally inspired and therefore, equally important.
Doctrinal error espoused by an esteemed leader is extra difficult to handle.
If the other ministers have taken proper action in defense of the truth, we must be supportive. A divided response does nothing to help the erring leader. However, if others do not recognize the error or are unwilling to do anything about it, we need to be willing to stand for what is right. This could require bucking popular opinion and standing alone. The more of these you have to answer with no , the more you will have to question the validity of your stand.