I think you guys are missing a HUGE point here. It is a peewee team, the roster will be emptied in 3 days REGARDLESS of what level the player is. It is built into the peewee teams. So bench him for 3 days and then you will be done with his headache. What ever you do don't feed into his behavior. Make your decision, implement it and then move on to something else. If he rants and raves and makes a fool of himself, he is only hurting himself as everyone will see his behavior and form their own judgments of it, but don't feed into it.