First, thanks for all of the replies and suggestions. I finally found a mobile service, but when I talked to the tech on the telephone he said he highly doubted that he would be able to do anything with the deadbolt. He said they generally have a lever mechanism, so you can't drill them out. He said the only real possibility was to break out one of the vent on the roof and go through it to get inside. For this, he would charge me $300 plus parts. I would then have to work with Heartland to get it covered under warranty.
Well, as you can imagine, I was interested in finding other solutions. I finally decided to try to remove the screws in the emergency window track to see if I could slide the window. I was able to slide the window until it popped open and allowed my wife to go in the window. However, even after getting to the door, the deadbolt will not open from the inside either. I handed her a screwdriver to remove the door latch from the inside, freeing the lever from the deadbolt and allowing us to open the door. The deadbolt is still frozen, most likely due to a stuck tumbler pin, but the latch works and I can still lock the latch when we are gone.
I will have to contact Heartland to get a new latch assembly, but at least we are back in our rig and will be able to continue on our trip tomorrow.
Thanks again for all of the suggestions and sympathy.