If you are 100% positive it wasn't a pink milkshake, I would still have them do a flush and see what happens. Worst case scenario your are out like a hundred bucks or so.
Did you investigate what was leaking and where it was coming from? It may have been unrelated but that was one of the things that made me think possibly a milk shake. It often causes the coolant overflow tank to spill over and leak coolant/tranny fluid all over the place.
The tranny could have very well just took a dump, it happens. If you can have them drain the tranny and show us some pictures of the fluid, that would help. Pictures of the coolant reservoir showing the coolant wouldn't hurt either.
Normally I would get a flush and drive it around and see, but I'm 1,500 mi away from getting home and don't want to get stuck again, especially since once I hit the texas panhandle good service shops will be far between. If I were at home and could drive this locally and find out if it slips again or not I would do that for sure.
I will see about getting pictures tomorrow, didn't look at this thread until now and the shops closed now. Will walk over in the morning. Second shop also said the transmission is toast. They think the dealer just changed the fluid/added some no slip quick fix to get it off the lot, and now that its been 1k miles the real problems are back.
My options are:
1) Used local trans with ~120k miles for $600 + $650 install and fluid. This comes with a 90 day warranty, however it is only good at the shop here in TN
2) Shop rebuilds it for $2,200 with a 1 year + 12k miles warranty, one again, only good at shop in TN
3) Jasper reman + install for $2,900 comes with 3 year, 100 k warranty, nationwide not ready for 2 weeks
+ some other more expensive remans
I would like to mention that the first shop I went to quoted me at over $4k for the Jasper, so you can get an idea that some shops definitely know when to pick on people in a pickle...
If I give up and get this towed to NV to deal with later it will set me back around ~$800 probably.