GIM group leader gone crazy. options?

Guess what after four years there is a fight in my GIM group, well sure we lasted longer than you!

One guy got in a fight with another guy over pixels. So couple days ago gentleman A announced to us he is done with playing with gentleman B. and he wants to leave the group.

Gentleman A has the leader role in the GIM. this morning he started to kicking process for all other members. We can't reach the group storage anymore either so he is basically destroying our accounts, a lot of the shared stuff from pvm was in the group storage.

The four of us that remain want to keep playing together we thought gentleman A would just leave. There is nothing on the oldschool rs website or wiki about this situation. Do we have any options or are we royally fucked?