Jim was in a bad situation. Based on my observations and not anything that he has said, he personally didn't get along with Bill. But it was hard to fire a guy who kept winning 19, 20 games. And the coach's contract was up. What to do, what to do. A bold move would have been to dismiss him, but I don't think that Jim had the political capital among the big donors to do that.
Then, the 2012-13 team was 12-8 (3-4 in the conference) when suddenly the entire team started to drop like flies. We lost 11 of 12 games to finish 13-19. It was frustrating knowing that we had a pretty good team and that the AD was just using an injury-riddled season to do what he had wanted to do two years earlier.
So, my personal position is that JIm shouldn't have given Bill any extension. Should have fired him coming off the 2nd NIT bid. But not even OSU could fire Matta until the Bucks missed out on everything, even the NIT.
I think you nailed it perfectly.