IIRC, the cinematic amulet in question indeed contains a "floater". I haven't followed LB into the loo just yet, but - then, again - I've never had the opportunity. Myabe it's for the best....
Yeah, the mind reels with unpleasant possibilities... you may come face to face with an LB turd in dry dock, which would make the task of extraction a bit more delicate in order to keep the artifact in tact. That scenario also might require a much larger amulet, and let me tell you a large amulet could look really silly hanging around a man's neck. Yes, definitely for the best, Marty, I'd have to agree.