I can't just IP ban him as his account has 208 - I counted - IP addresses attached. Banning by name is a possibility but he could register under a new user. Banning by email is easy to get around as getting a new one is easy as pie.
Yes, he's the type that would come back on and try and mess things up for everyone by getting around a ban.
So what steps should I take to make sure a permaban sticks?