Okay, I have the car back and I can't find any issues. Pinon and axle seals replaced, car seems fine at low and high speed. Let's just say I tried it at a "range" of speeds and on corners.... I'll get to see how it feels at the track next Monday.
Other things completed while it was there:
Flaw in clear plastic on top of shift knob--knob replaced under warranty.
Headlight control module--replaced under warranty (note in file that if bulb goes it's covered too).
Engine mount bolts, sway bars, and other suspension parts checked (no issues). ARB and suspension torque checked.
Car came back without a spec of dirt or grease inside (and was not washed per instructions).
I think I've got a pretty good dealer/shop. I also think the assorted 12 packs of beer (Sam Adam's sampler this time, Sierra Nevada last time) I leave in the back of the car for the techs and my SA don't hurt either!