Mass change of additional usergroups
 

I misunderstood the way that a secondary promotion worked. I wanted to promote users whose secondary membership was to 'Registered Users'. Instead, the promotion promoted primary membership users to a secondary membership of the new ug. I already had a promotion to do that, so now members have the promoted ug as both their primary and secondary ug. Is it possible to remove the additional ug from all the users in the group at once?