What to do when lost contact with original group creator?

I saw there's a post about this stating there's nothing they can do without the original creator. However, my situation is a slightly diff in that I had been promoted to a moderator before we lost contact with the original owner. But I wasn't granted the right to ign another moderator, or revoke moderator privilege for ppl that are no longer in status. I need the ability to ign new moderate, a public one shared by the person who president the org at current time. Will I be able to send an email or whatever to somewhere in Yahoo to accommodate such situation?