Hi Rae,
Sorry to hear about Pippins troubles. I don't really have much to add, but was there any chance he was trying to hibernate (and still is)? Cooler temperatures, less light, and lower humidity can kick this off, and it's possible to have one trying to hibernate before the others do. They can be pretty uncoordinated if woken early from this.
There are a few vets in Toronto claiming experience in exotic pets that you've probably already found. You can get down there without hitting a 400 series highway if you stick to less major roads but it would probably add at least an hour each way. This might still be worth it
Contacting Dr Frye might still be a good idea for advice.
Good luck, and I hope Pippin improves.