Painter played MU hard and balls deep.
I will give you reasons why Mike Alden was dumb for going all in on Painter:
1. He's a Purdue Alum.
2. Purdue was following through on everything they promised in terms of facilities: A complete renovation of Mackey Arena, replete with new basketball operations facilities (offices, practice courts, dressing rooms, weight room). Next to contract/money/emotional support that is almost always next on the list.
That only left one thing . . . money.