Wow, you're in between a rock and a hard spot. It sounds like a case of really poor planning.
I'm relatively certain that a Class 2 cannot be phoned in but perhaps your doctor can mail you hard copy prescription. Not sure if it would be honored in another state but since it's a dea issue, it probably would as long as the pharmacy can get in touch with the issuing doctor for verification.
If that doesn't work I would try for a referral from your home doctor to a local doctor along with a bit of a case history and treatment protocol.
If that fails, find a new doctor on your own in Maine who will write you. You'll have better luck if you try for something weaker like darvon or
tramadol. Maybe call your health insurance company and see what they suggest. Take a quick trip home?
I know nothing about internet pharmacies and drug commerce but I'd be very leery of throwing money at anyone who says they will sell you Class 2 narcotics without a prescription. Make sure you have recourse but I don't think a credit card company or PayPal will offer much help if they know what you were doing when you got burned. Check out a forum called drugbuyers.com. Maybe you can find some practical info about online pharmacies in there.