If Marshall Faulk had not said JR was at fault on the INT, I wouldn't be persisting. But the guy KNOWS Fairchild's system and the responsibilities of the WR's, and he is an impartial observer, meaning he has no one to protect and thus no reason to lie.
In any case, it was no worse than what I've seen other, more experience, and good QB do from time to time. Hey that's what Warner did to basically lose the game for the Rams in the first Pats SB win.