I figured that is what happened. As a founding member, all work you did may belong to the club. But that does not mean that any future work would be free. If you are hosting the site, doing maintenance or anything else in the future, you could charge for it. But then they would be able to go elsewhere. As far as the domain goes, if you did it on the premise as being part of the club, actual ownership maybe the clubs in the absence of an agreement. Also, they can claim they own the TM and entitled to the domain.
I would hope there is some documentation at startup (business plan,articles of incorporation or even just simple agreements on how to start the club), if not, then ownership is open to interpretation. So it can work for you or against you. You could say you did things for free in the hopes of getting a payoff down the road and they renegged. But they could argue that you knew you were setting up a nonprofit organization and you worked out of the labor of love and offered to pay the expenses as you way of contributing.
This is why it is always important to get things in writing before proceeding with any venture. Never take things upon yourself without the protection of documentation in case a situation arises that you did not intend.
I wish I could give you a black and white answer, but it is tough to do at this point since there more than likely more to the story than we know. That is why I had to broach it from 2 different views. Your best bet is to contact an attorney if you really wish to pursue the matter.
