Well, Tiamat's stuff is hard to comprehend, but as best I can tell it does look like he was saying he would not do such things. However, as Saz points out, just mentioning them makes you have to wonder why he's doing it. So if Ziroc feels the need to keep an eye out for unusual occurences, then we will keep an eye out for them. As he says, he's seen a lot of things go on in the course of being a webmaster and as Saz says, it's almost like walking into the airport and saying 'hey I don't REALLY have a gun in my pocket' for no reason.
As for how others have treated Tiamat, I have to agree on that score. Some people have been very rude and behaved in ways that were not usually acceptable if done to anyone else. I think Tiamat did his best to be a pain in the neck, but when he tried to be better there were people who still stomped on him.
Tiamat HAS been given many chances to straighten out, though. Ziroc has been incredibly tolerant of the kid. I would stress that Z allowed him to stay after MANY infractions and even changing his name didn't help matters. Recently he was starting to post less incomprehensible spam, but he made a few pretty bad mistakes, got banned and this is how it ends. Let's just move on now and hope he doesn't do anything foolish.