Rex is a salvageable coach. If you pair him with a competent offensive coordinator and a defense that could put pressure on the QB without a blitz, he can win a Super Bowl. He got close twice and you just cannot discount that. Is he a hall of fame coach, no. Can we win with him, yes.
I can see him winning a super bowl when he is the head coach of another organization whose ownership gives him the pieces of the puzzle. What the hell is Tanny do to sure up this team in the off season? Landry and Bell, good job. Tebow? Uhhhhh!