Let's not turn this thread on me, but I will explain.
It's your own fault for not leaving a server when stuff hits the fan, that or you can go ahead and get pissed off by freekilling. If he's a regular user or admin or whatever the forget it is, then that's a different matter I guess. Yeah sure he stated he did it before, you gonna stop him?
I'd rather not flood the page with some nice reasons why the forget you could or should be creative, or you can be simple, your choice.