I would just like to bring your attention here:
It would appear that this was your third offense. You were banned for multiple reasons, and not just once. I do also recall permanently gagging you and having to kick you multiple times in the server when I was an administrator at the time.
If I recall correctly, according the Hidden ban manual (which I do not know is in effect or not) a third offense justifies a permanent ban. However, I am in no position to make ANY calls merely just stating what I know.
Just because someone doesn't "like" you or the music you play in the server does not justify you to teamkill that particular user.