In our colony of 7 we have a small female and medium male that can cause problems. the male only once in a great while. the female is most of the problems, some nights she will bully other gliders causing them to make a real loud bad noise.
the other gliders making this noise seem to be telling her to leave them alone. if she gets to be to much of a problem we have an unused small pocket pets cage, we will put her in that for the rest of the night. this will usually get her to behave the next few nights.
so for us, one night separation has worked ok for bullying.