Despite his theological disaster in his later years, I consider him a great man of God. And moreover, his wife Ruth, whom I admire more than him, was the unsung heroine known only to a few, minus Billy himself and the feminists. Here's the tribute from Franklin Graham's FB page to both of them:
There are those who are still adamant that Billy's a false teacher. My response to that is easy: attack where the error lies, attack fiercely, but spare a man's history, spare him fairly. No doubt all would admit that he was a great man of God in his younger days.
Therefore, learn to boldly pursue, catch and crush all false and slippery doctrines, however, be not unctuous for nor against a person's achievement in admiration or in jealous damnation, lest when you fall in his weakness and he repents suddenly and by God's command, rebukes you like that old prophet in Bethel (1 Kings 13).