My suggestion:
A strike system, when an ET makes an event if a certain player is annoying/insulting and seems to pinpoint every single mistake then you should be able to kick them ONLY from your sets of events in that hour/two. Of course we will note down each user kicked and why, so no one will be abusing this function.
If the same player has been kicked from every single event by all of the ET members then we can look into banning these individuals from playing events for lets say a month?