I understand your frustration and all here. Yet why would you be so low to post his ip?
Makes you no better than him in my opinion if you are willing to do something like that on a public site.
Be the bigger person and move on from the issue. I've had issues like this personally more than once so I understand what you are going through.
Yet if you lower yourself to their level it will only make things worse for you in the long run :/
Good luck on things.
IP addresses are personal information that is not to be posted in here, and as far as your link to the forums, as stated on the board rules, it is forbidden to advertise a forum hosted on a free forum provider.