The Board is charged with the responsiblity to run the organization and ordinarily has the authority to hire an attorney to represent the organization from the general funds, unless there is something in the bylaws that might prohibit them from doing so in a case brought by a "member". If members don't like what is going on, they can probably vote the current directors out of office. Check your insurance policies to see if you have insurance to defend against specific charges when they are actually made.