Only when you trot out your old chestnut of pretending like there are only 2 possibilities.
Of course there is always other possibilities like aliens focused their radiation beam on the Elevator, time travellers sabotaged the Elevator or perhaps a rat gained the ability for sentient thought and pulled the Elevator fuse?
But in the here and now I work on logical scenarios, on the other hand you seem to be promoting a 3rd scenario that relies on a random temporary blackout at the exact point in time when Mooney was trying to operate the Elevator but who reported the lights going out or was your blackout specifically targeting the Elevators?
JohnM