Midnight Blinker

I have ejected everyone in my group planning on closing it. but other members who were asigned as owners refused to leave the group adding more owners of their own alts. how can I eject them all to be the last man standing in the group? I have 2 groups I want to close that are not in use or deed to any land. they are just taking space and I am the owner of both. Caribbean Breezes Club & Resorts Caribbean Breezes Elite VIP Club ~Midnight Blinker