I agree with everything you say here and I am glad that God is that judge who will carry out the verdict on each of our lives. Amen. However, if we believe Scriptures that he, like all of us, will be held accountable on the Day of Judgement (Matt. 12:36), who are you to be condeming him for God? If you say that Warren has wronged or sinned against you with his teaching, why are you not using the manner proscribed in Scriptures to resolve these issues (Matt.18:15)? Aren't you held accountable by Scriptures as well?
Public hypocrisy or false teachings must be publicly apologized for, or retracted. If the person guilty of such refuses, then public rebuke is the only recourse. Incorrect, flawed, and false doctrine must be rebuked (Jude 3).
"Watch out for false prophets. They come to you in sheeps clothing, but inwardly they are ferocious wolves. By their fruit you will recognize them. Do people pick grapes from thornbushes, or figs from thistles?" (Matthew 7:15-16)