For Marquette fans who have been upset about the "steppingstone" title some would like to put on the school this might be a good read. http://www.tulsaworld.com/sportsextr...7a43b2370.html
Basically most universities will see a coach leave for only a handful of reasons:
(1) high level success
(2) failure to win
(3) the money chase
(4) the coach self-destructs either for morals issues or because of an oversized ego
Most of the time it's a combination of the four.