Cheat detection is likely to blame. My guess would be cheat detection does not have tolerance for extended periods of strafe jumping up a staircase. The longer you strafe jump the faster your average speed is and that is possibly a factor in your kick. The official maps do not have staircases long enough and the server can probably determine if you are falling, or it is impossible to fall long enough to produce such a response.
Also, I think those bans only last 20 minutes, or the server default. I don't think the server would alter an owner's blacklist automatically and without consultation.
Also, I think those bans only last 20 minutes, or the server default. I don't think the server would alter an owner's blacklist automatically and without consultation.