I agree with what you are saying. This is not my school. I can limit his access my own classes, but have no control on whether or not the school will continue to accept his patronage or not.
Ok so your problem is solved.
Now share your solution with the next teacher who is graced with his presence and so on and so forth. Eventually he will either avoid every teachers class, effectively removing himself from the dojo, or he will run up against someone who can get through to him and he will learn.