At the time it was signed it was more than all but two B1G coaches. Chryst, Fitzgerald, Ferentz, and Dantonia are all quality coaches and don't have as lucrative a contract. 7 years is a sign Moos believes it's going to take some time for a new coach to install and build his program and I agree with him.
What I meant by crippling N football if this doesn't workout for whatever reason was not entirely about the money aspect. I'm certainly hoping things do work out, but if they don't the psychological blow to the program, fans, and boosters of shooting for the moon and getting the guy we wanted and then seeing it not workout will be a hard blow to overcome. You're right N could afford the buyout and a new coaches salary as things stand today, but if SF doesn't succeed I'm afraid the toll that will take on the program will be significant in more respects than can be quantified at the moment.