Having the keys doesn't mean a pope may act as a law unto himself. He may not oppose the faith. If he does, he needs to be called on it.
My only criticism of JP II is he’s not a strict disciplinarian. But then again, not many Popes have been. To suggest he opposes the faith is simply not true. This attitude is similar to some of our Protestant friends who get a new preacher then decide his preaching doesn’t line up with their view of scripture. They either form a committee to run him off or simply find another Church that line up with their view. Seems to me you’ve found another Church.