It's absolutely disgusting behaviour on the part of the officials at the Antarctic bases.
The guy isn't asking for a handout to get home. There are no taxpayer's dollars going to be spent rescuing him.
HE WANTS TO BUY FUEL!!!
If I didn't have so little faith in the power-at-be in the Antarctic, I'd ask the boys for a whip-around and we could get him the 400 litres of Avgas ourselves and send it to him.
I just watched the news footage on TV here in NZ and the officials are adamant that they will not help him, even to the extent that he is being made to sleep in the plane at a "perfectly fine" -10 deg C!!
Good luck Jon. Safe travels home.