It's just the way you (and Lub) have been acting in the RTB hosting thread, and since I simply had to pick one side for hosting the server it would make sense to not let the other party get on the server as to prevent both parties being at the server simultaniously and causing a miniature version of the thread there.
I'm not going to go further on this subject because the last thing I want is this thread being moved to drama.
Reply to post below:
Yes, it'd be silly to ban the person providing the service.
I don't expect Lub or Ephialtes to actively play this anyways.