Had a RV repair guy come out to the resort where I'm staying at today. He took a look at it, said he thinks it's something with the clutch/motor. The most notable thing was, "how in the hell are you supposed to get into that thing?"
The door hinges are inside of the room too. Spent last couple of hours calling back and forth with Keystone (whose best advice was, "gee, we're stumped, maybe take the hinges off and get in however you can, that's what we'd do") and my dealer. Looks like I'll be prying off the flimsy door strips to get to the hinges and see what the maint. guy says.
This is a terrible design flaw in the layout of the trailer.