We also have a problem in our closet, only it affects the wooden cabinet (or whatever you call it) on the street side. It fell on our trip to Florida last year and was "fixed" by LSI last spring, only to fall again. There is a wire going through it.
I've tried to rescrew it as it was only screwed into the side drywall panel, but apparently have not found a stud as yet.
We like the unit, but wish this didn't happen. We also wonder if there may be something cracked in the front frame that is causing enough flexing to pull this unit away from the wall. I would hate to see this move back far enough to break the closet mirrored doors.