Well, the locked in gear problem is not one I've had to personally deal wth, yet. Having said that I'm looking forward to the next time I load the car on the trailer.

Just throwing some ideas out there. It's possible to pull the access cover on top of the trans pretty easily and get a look at the shift mechanism. That would give you a chance to see if it somehow managed to engage two gears at once and MAYBE be able to free things up without having to pull the trans. Of course typically when I hear about locked transmissions (of other makes) it usually related to a flywheel/clutch/pilot bearing issues so seperation may be you're only choice.

In reality, I don't have a clue on this one since I've never had to deal with it, or even know of anyone who has had to deal with it for a Dodge. I wish I could be more help. But I wouldn't discount using a wrecker boom to lift the car and at least get it off the trailer to work on. You do have AAA, right?

Good luck.