We got our RV back yesterday. Repairs were done under warranty. All seems good right now!
As to the towing issue, Thor said they generally use a rollback trailer, but said on a Sprinter, Mercedes would be the ones to decide on what type of truck to use. I think one of the main lessons learned is to be very specific in requesting a low rollback trailer when the motorhome has a very low clearance like ours. The Mercedes Road Service reps were very friendly and seemed to want to help.
Thanks everyone for all the great info!
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