Just stop with that nonsense.
First, Corso isn't, and has never been, on College Game Day for his expertise. He's an entertainer and, prior to his stroke, a damned good one. He is beloved by Herbstreit and everyone else on that set, and I've never heard anyone anywhere say a bad word about him.
Next, I don't know anything about the Foster incident you reference, but I do know that people who report to good coaches and good people sometimes do bad things. No leader can control everything.
Finally, Corso coached Indiana to a very successful season in 1979, culminating in the first bowl win in program history over a previously undefeated BYU team. In my book, that gives him special status at IU - - forever.