Ok a couple things. He did just RP last week for Warfare. So it's not like he is just going around hating rps without actually contributing.

Secondly, tone it down a bit, this is an OOC board.

You are completely right in that he is hating just to troll. Have you heard the phrase "Don't feed the trolls?"

If not, now you have, if you have, try abiding by it. It will save you some headache and time. Let him troll. Don't respond, don't even give it a second thought. Just ignore it and go about doing your thing.