What turnaround? He inherited a .500 team; his first four years he was sub-.500. His fifth year he was half a game above .500. In his sixth year, he had an abmorally good year, but couldn't finish it, losing as a ranked team to an unranked Buffalo, with Hoke then leaving before a beating a bowl game. And the foundation he built? Did they remain near the top of the MAC after he left? If I roll a pair of dice 6 times and get an 11 once, I'm going to quit and start telling people that I turned the dice around.
He may succeed greatly at Michigan, and we might all love him in the end, but his resume is his resume. I remember a month or two before we hired him, I was told the same thing by my fanatical sports lover brother -- there's no way Michigan would hire Hoke. He went to a MAC school; I went to Michigan. He didn't understand that we would put bloodlines above all else.