Lets just say he is on borrowed time, I have now logged his IP address and will block all future postings if I read any more nonsense.
Even if the name changes the IP address stays the same and I can perminantly stop any postings made from that computer.
It's sad that this becomes necessary now and then, in 3 years I have only had to block 4 posters, usually a warning is sufficent, but some people never learn until it's too late.