i know for a fact that its not GRS.. cos there are only 4 ban commands in the whole script and they are self contained in private methods. Now it could be many things:
PunkCatcher, someone has ure admin pass, 1 of ure own imprefect scripts, rogue client admins, etc
You sound like you have no idea what you are talking about.. do u know what u are talking about?
Also.. mtama keeps logs of all bans.. as does the server log.. did u look in that to prove what u just said?