I think it was an attempt to get the 5 guys who were playing best on the court at the same time. Sort of like leading off Adam Dunn, some things are out of the box for a reason.
In a lot of ways Crean's damned if he does, damned if he doesn't. He's criticized by many for not playing Sheehey early on, now Sheehey starts and plays 25 minutes, but it comes often at the expense of Victor Oladipo and people wonder why he's not playing as much.
The obvious targets are VJIII and Pritchard, but we saw what happened when they took out Pritchard, and without VJIII the offense was the least efficient it's been all season(hard to believe I know.)