Um, isn’t the whole point of “not using superpowers when one is in COI” that one shouldn’t be using superpowers when one is in COI? The COI has been identified and acknowledged/explained by the person doing it, as I understand.
Thus, no more usage of superpowers by that person should be acceptable in this topic, period. Insisting that someone does another wrong in order to right the initial wrong is not good idea at all, for all sorts of reasons.
So, IMHO, any and all (possibly needed) corrections requiring superpowers should absolutely be done by other moderators/admins (preferably after conferring between themselves), and definitely not by the one who is in alleged Conflict of Interest.