User blog comment:IamJakuhoRaikoben/Chapter 368: The Third Seal, Review./@comment-5598380-20140124212807/@comment-7418318-20140125143851

That depends on what kind of remote control it is. If it's one that constantly sends a signal and only the end of the signal triggers it, it would explode in the spirit realm. That would be bad, but probably still better than detonation in the guild, since the spirits are immortal and it's unlikely that they suddenly lose that immortality in their own realm.

If it's the kind that detonates when the signal is sent, I very much doubt that the signal would ever reach into the spirit realm (even if it did, see the above point). So it would detonate at the earliest when Horologium comes back.

But thinking it further, since Horologium also protects his insides against magical attacks (and even lava!) a magical detonation signal might be block by it. If so, it could simply walk (or be carried for more speed) out of town to a save spot.