I'd be mad if I was you. That's a very stupid and short-sighted decision on their part. With your education and experience, you would certainly make a valuable contribution to their marketing and fundraising efforts.
Can you go over their heads and contact the organization's HR department? I know it's not something you want to do, but they're making stupid decisions that affect not only them but others in the organization.
This might fall under the blessing in disguise category. These people must be awful to with/for. Good luck.
