Sorry to hear OP.
As many in the market have noticed, now that these cars are harder to find in nice shape, their values are going up.
Many are being patched together with a "good enough" approach and sold as premium condition cars (I have high suspicions of many of the cars on BAT have odometer rollbacks etc.).
Hopefully things turn out OK and you are able to save it without too much headache.
This seems to be the case. I've seen "pay now or pay later" repeated about these cars, and I now see I could've just put the extra $5k in to buy one that's actually in good shape (though who knows even with the ones that seem good).
This afternoon I stopped by the shop and talked to the manager. After some record searching he discovered that sure enough, they didn't change the oil (or any other fluids) in the year the shop was working on the car: a pretty big oversight, in my mind. He agreed that they certainly would've seen it if they did the change, but "I don't know what to tell you."
It sounds like they want to cooperate to make it right, so that's good. I sent them the oil report and they're "going to show it to their BMW engine expert on Monday." They also commented on the lack of alignment disclosure saying that they don't do alignments in their shop, so they just sent it off and got it aligned - the other shop didn't comment on the camber mismatch.
And as far as spec/approvals on the oil, this is my first oil change with the car so it is unknown what was in it before. I replaced it with Rotella T6 5w40 for now, but I imagine that won't be lasting long before the engine needs to be torn apart, anyway.