I'm often wrong, and I may be wrong here, but I generally don't offer an opinion without having some basis for it.
First, just to be clear, I think Glass has done a good job at IU and I don't dislike Crean. The timing of the Crean extension has always struck me as peculiar and ill-advised. Why cut a new deal if you don't have to? Didn't Crean still have several years remaining on his existing contract at the time of the extension that was inked in November 2012? And was there any danger of him leaving immediately prior to the start of a new season? Clearly, no. It almost seemed driven by emotion, as IU was basking in the glow of a #1 preseason ranking. The announcement, just before the season opener, certainly made for good theater, though.