User blog comment:IamJakuhoRaikoben/Chapter 375: Supernatural, Review./@comment-3424593-20140314111920/@comment-7418318-20140314132521

Considering that most Mages in Fairy Tail (the series) and Wendy in particular (since she's the only one in a position to do anything about Face) don't seem like the types to do password hacking or delicate mechanical repairs, I don't think it will be too complicated to shut down Face's charging sequence.

While I doubt it'll be a single on/off-switch, I don't think it'll be too complicated either.

Unless someone like Hibiki (archive could help for hacking) or Jenny (ability to absorb machines might help in repairing one) just happen to turn up without any warning.