I wouldn't trust the STL Post quite yet. They have passed wrong info about this story already. I will believe it when I see (Read or hear) it. They claimed Painter returned to West Lafayette on Tuesday but that was wrong.
If true (and I have my doubts), this would be a puzzling move on Painter's part. Unless there is something behind the scenes ($?) making him unhappy at Purdue, I really don't see how he would be better off at Mizzou. Unless they have lower standards for getting kids in or something? I don't know that to be true, I'm just trying to find a reason why this would make sense.