There is nothing else going on in the background. I gave him an infraction for breaking the forum rules. He got upset about it and decided to leave. That is his choice. I said that if he wanted to talk about it I am willing to discuss it if he felt he was hard done by (see post #2). AFAIK he hasn't been back.
To set the record straight, I gave him the infraction first. When I went to pm him about it, he had turned off his email and pm's.
I am pretty sure that the rules about warez and breaking copy protection have always been present on this forum, even if they weren't written formally.