They need to have wins stripped. They took away a season from Ohio State because of tattoos. Michigan full on cheated. You can't tell me that they went from getting blown out by Ohio State, losing to Iowa, and losing multiple games every year to being unstoppable over the next three years.
Their talent didn't get that much better. There was something else. They were struggling with Wisconsin, Minnesota, Purdue, Indiana, and Nebraska. Then all of a sudden they are blowing out everyone. Ferentz didn't become inept against them all of a sudden. Just look at how their offense struggled for years until Harbaugh got his "mojo" back.
The man knew he was about to be fired. He went out and did whatever he could. It's not a coincidence he became so obsessed about going back to the NFL right as he started "getting it right again".
If he had it his way, he would've been in the NFL before he even won a championship. Think about that. He had his whole team coming back after two straight great seasons, two straight years of whipping Ohio State and winning the B1G. What coach wouldn't want to come back to a team that was a field goal away from competing for a National Title? A team fully intact.