This doesn't warrant a perma-ban in any form, and if you think it does warrant a perma-ban, then you don't yet understand admin.
Anywho, Rellik is a good, active, member of the community. However, he does like to use any exploit necessary to jerk around while in the server. He IS rather active, and I normally would see him on every other day, so I think a week ban would be a bit too much. A couple days should do it, it would have the same impact as a week ban for a player that only plays 2-3 times a week.
Rellik, you need to stop utilizing the little exploits in an attempt to just mess around while in the server. Whenever somebody brings it up to you, you automatically go into the "victim mode" and blame it on the map, the server, or other people. You need to start taking responsibility for the crap you pull, and a temp ban, I hope, will fix that.
And for the issue of !block. I think it should stay. The only people I see complaining about !block being implemented are the people who can no longer "back knife" during a knife fight because of !block. The problem with back knifing is that it is so internet connection dependent. I do think that the command should be removed from being used in regular play, and instead there should be an option that pops up (Just like the "Agree to a Knife Fight" option) that asks if you want !block on or off whenever a knife fight occurs. I would make 1. !block off (due to spam) and 2. !block on.