Just a thought?
Could be that he has a bad reputation in the Paint world, and knows that if he takes in Paints to train, there is higher chance someone will run across someone that knows things about him.
Could be on dodge from losing the ability to show? Or train too?
Matter of fact, now that I think a little more about it? I would be thinking this had something to do with it, he may have gotten suspended from training Paints, and is trying to hide?