Just dropped my car off. This dealer doesn't have loaner cars, they have a rental department....but I was told by my regional customer service manager that they would take care of everything, I wasn't asked for any form of payment or anything, so I'm assuming that's the case.
Anyways, I told the guy exactly what I was experiencing, handed him the printout of OP's first post here, and said THIS describes my experience, and here's what they did to fix it. He asked if I thought I could replicate it if a technician went out with m e, I told him the last time I tried that, it didn't act up, because it's not consistent in my car. But I told him to step on the gas from a dead stop, shifting from first into second, that they'd be able to replicate it. Also told him there was a 1/4 tank of gas, to drive it around as much as needed till it happens.
Guess I'll hear something back shortly.