I think he got tired of all the second guessers. Probably figured he'd never get this close again. That said, he seemed to be getting near the end of the line. I'm sure a few of his coaches would have been forced out too. His record will be hard to match though. He did a better job than Sparky ever did. Time for new blood. He's a nice guy that had a tough job and he did it admirably most of the time. Have a happy retirement!