ZeesKite,
For some reason, I think that most moderators shy away from undoing changes made by another moderator. For example, if one moderator rejects a post, it’s unlikely that another moderator will come and unreject it. There may, however, be a way around this in the case of your subtitle.
Try posting to the request-a-subtitle thread from a while back, and specifically state what you want your subtitle to be. That way, the moderator won’t be “undoing” another moderator’s changes, but rather fulfilling the wishes of the user.