My thoughts on it are this: I have NO idea what went on in pm with bill and wooly but as I posted earlier I would think pm meant PRIVATE message. Private to me would and should mean just that, private. I wonder if wooly knew or understood the pms could be used against him IF he posted something he shouldn't have there. I say IF because once again we have no idea what went on in pm. All I saw was bill's post to wooly to check his pms.
Semi is absolutely right, bill has made posts that should have gotten him banned IF he'd been reported. He's made posts to me and other people that very well could have been "ban worthy" if we'd reported him and been persistent like I'm sure he is when he's getting someone banned. BUT, I also don't think bill does it all by himself in most cases.
I think bill and some others "bait and try to goad" others into things, and then scan every post that person makes so that when there is the slightest thing they can use, things they'd completely ignore if it was their pals posting it, they start reporting or even emailing. I think they do it in multiple ids too. And lastly, as I said, if the mods were to get nitpicky, if we were all reporting and harping to them, anyone on these forums could be considered "ban worthy" at one time or another.