He is very much stranded, as a civilian on a military base, they are just chucking all procedure and rules out, he does not officialy exist, but gets fed and a bed, and razzed and razzed and razzed, sounds like he held up, though it will likely be impossible for him to fly out as it would need special attention to get the plane running if it was left to freeze solid, and departure clearance will have to come from the minister in charge and then he could end up waiting for 6 months for good weather..... guy did a polar circumnavigation in a RV kitplane, very serious extended range

I'd have massive schadenfreude if red tape prevents him from leaving on his plane. "You need fuel? Oh we have plenty here, but as military we can't just give you fuel, your government needs to buy it from our government who'll talk down the chain of command to us.".

"You want to fly? Your violation of the airspace laws means you're not allowed to use Chilean airspace anymore... sorry Gringo."