I've cured 2 roosters by walking after them, making them move, if they stop-nudging them to move, for 15 minutes a day. Do not back off, do not smack them and then leave. YOU need to make them move for those 15 minutes every day, and not let him do anything but move. After a week, mine were fine, one was fine after 3 days. If you just smack him away, then leave, he has won. If you back off, he has won. If you can dictate what he can and cannot do, you win.