He is basically spamming the forums, which does break the rules. Yes, you do have to make a bit of a leap to see it that way, but I think it's a reasonable leap.
Perhaps when he realizes that spamming the forum will not earn him a victory in the contest, he will just simply stop doing it. The problem for us is that it resets the thread and it's difficult to know if something is really happening in that apt. We basically have to clear his posts to see if something actually occurred. His posts are really just a reiteration of the previous comment before his. It's obnoxious, which is another rule.
Ok, that's about all I can do about that.