Didn't the people whose memberships were revoked do something bad?

Until an unbiased hearing is held, the vague charges of "acting against the best interests of the station" are unfounded. The ousted volunteers, who don't believe they did anything wrong, should be presumed innocent until proven guilty and their memberships restored. The board did not use their own discipline policy which has procedures for hearings, and there is no guarantee that other people with diverse opinions different from the manager or board won't be treated the same way.