re: What happened to House and this defense in one year?

I do know that he played a semi prevent zone defense on dang near every 3rd and longish play the entire season. Ranking 116th in 3rd down stop efficiency is absolutely telling. He was gutless and played it safe, not knowing what else to do. Made him look like a fool and embarrassed the players.
Red zone efficiency was darn near as bad, and that was again because he was basically afraid to challenge the offense.