RDU Jetblast
Veteran
There was no where to return to. Gates were taken, inbounds cloged the allys.
It's JFK. It's winter. There was a blizzard. During cold weather ops, Tugs are left running to prevent freeze ups and no starts. Bag tugs are fitted with plows and the flight line is kept scraped. You push the empty planes to remote parking and allow full planes to the gate. That's the way its been done for decades.
Any way you slice it, there's no good excuse.