Kind of like they intentionally turned off the power, and something bad happens when the power comes on and if you force the door with the power off, you see something you wouldn't otherwise see... kind of thing?
That makes sense. Like if there was a garbage compactor in the process of smushing something when the power went out, the moment the power comes on it finishes its job, so with it unpowered, you could find something you wouldn't otherwise find.
