Hoo boy, I haven't posted in awhile
As it is, Atmuh, what you were doing was griefing. It was complained about, and an admin dealt with it. This isn't a democratic whatchamacallit, so I could theoretically get on the OCR server one day, say "hi" in chat, and get banned. The admins have full reign over what they do on their server.
Compound the fact that you were griefing with the fact that you have a history of doing this, (and lying about it. "I haven't !votebanned in ages" then a few posts later "ok so I did it 5 days ago), means that the admins, when they're faced with you causing issues again, are going to be far less lenient about it. Do you have to like it? No. It's their rules. And I can't suggest enough that if you don't like it, don't play here.
I haven't been here long enough to know your entire history (only the snippets I've heard about), but from what I've seen of your mannerisms here on the forums, I entirely believe you've been a pain in the past and that the admins are finally just done giving you chances.
Also I totally need to play tf2 more, but every time I get on, Miyako is playing demoman and makes me hate the game with how good he is compared to me. /shakefist.