I really hate to think that it's for the good of others than one person be "kicked out" but when it comes to your education, you're right, that's really not fair. Everyone is paying to be there (presumably) and I would be pretty upset if that were in a class of mine.

Actually I get pretty upset when someone is talking or being disruptive in my class because I'm not paying thousands and thousands of dollars to listen to their gossip. Have you talked to the chair yet? Is there some way to do a kind of probation where he understands that if he continues this behavior he won't be allowed to attend anymore? Why is he there if he can't comprehend the subject or simple manners? I understand equal opportunities for people with learning disabilities, but for HIM. Why does HE even want to be there if he isn't getting anything out of it?

Like my chair told me and the other new grad students "You don't have to pay attention or go to class if you don't want to. Just let me know and I'll stop paying your tuition." because we are all on graduate assistantships.