In the very least, there should be a means of transferring GM.
Our guildmaster is not active at all, well, he is and he isnt. He's me, and I don't play the "GM" pirate (ie Samuel Mcmalley) much anymore (unless GM access is required).
A vote system would be one option, however what if several officers have disappeared as well? With members, this would likely be even a bigger problem.
Guild management is definately falling short... that needs upgrading.