That dude is beyond lucky.
What caused the explosion?
The gif description says that a cable snapped and made contact with a power line.
Wow that’s insane
That is terrible…
On a side note, cleaning windows on a high rise with a rig is a whole different ball game and is priced accordingly. Those guys make some bank for the risk involved. That is why is has a restraint harness tied off to an independent rope (personally, I would have a second rope as well). Safety first. At the end of the day, we need to go home…