Come on you're just holding it wrong, Zero to One is the most important thing! One to zero is next.

Really, how did he become a board member? Donated money or self-important resume? The rest of the board let him do it so it's a bigger problem than just him. Get the email list of membership and start a real space... there's lots of empty office space now so you might be able to get a donation since they get to write it off at old pricing, but it's a huge amount of work for very little return (unless you like running these sorts of things).

Sorry for your situation.