Usually with a foot injury like this, the injury has to be completely debrided. I can still see some hair in the photo, and the fact the foot is still swollen is worrisome. Once the the cause of the strangulation is removed, the swelling of the foot usually goes down very quickly (within a few hours, especially If it is a new injury vs old). Keeping the foot clean is very important also; no wheel, and diluted hibiscrub foot baths to disinfect the foot.
is there no way you can get to a vet at all? It wouldn’t be megabucks. This is a very common injury in Pygmy’s and only requires a quick gassing from the vet to debride the foot, ensure no hair is left embedded, and some antibiotics and pain killers and you’re on your way. This isn’t something that would cost into the hundreds (not here it wouldn’t anyway, it would be €100 max even with an exotic vet).
how is the foot looking now? Any more pictures?
most hogs will continue to act like everything is fine with an injury like this - so behaviour being normal wouldn’t reassure me the foot is okay. My Gus had a similar scare with his foot a few months ago, so I can speak from experience - we thought we got it all, but we didn’t. And yet he acted like everything was just fine (his paw wasn’t even sensitive and he would let us touch it and everything). Luckily the vet saw that when he gassed up, and once he removed the bit of embedded hair, his foot basically looked normal within 24-48 hours.