Blizzard has published a blue post saying that they expect to complete the removal of Mage Tower rewards from players actioned for having their account piloted with this week's maintenance window, March 8th.
As we previously noted, we’re working to remove rewards and kill credits from players who were actioned for having their account piloted in the Mage Tower.There are, however, some players who will return from their suspension today before we’ve completed that effort.We expect to complete the removals for all suspended accounts during scheduled weekly maintenance tomorrow.. Read more on wowhead.com