The proof is in the pudding, or lack of pudding in this case. The Bills offense is bottom half to bottom third in the league by almost every category or measure.
Throwing 35 times in high winds while handing off 12 times in a game that was close through 3 quarters was just simply stupid imo. Hopefully that game was a wake up call.
I don't expect he is going anywhere this season and I hope it improves, but I think keeping a poor coordinator around just for the sake of continuity is not a good move.