If he has an actual problem and can only communicate this way, you might be legally exposed if you ban him. No, I am not uttering a threat. I am simply pointing out that some folks are prone to sue when they feel they are being discriminated against. If he is one of these, (and I don't know whether he is or not), I'd hate to see the game shut down just because some players did not have the willpower to ignore his rambles if they don't like them.