Thanks again for the help - here's the Dx as far as I can tell -
1) There may have been an issue with pressure this morning. As someone pointed out, it was very cold this morning and had dropped very fast last night. Once I got back out there today to check pressures they'd all come back up to 37 +/- .5 - which was after it warmed up a bit. (I usually ride them a little high when going around town - the mountains are a different thing)
2) I doubt that there's an alignment issue as I'm the only one who's driven it since we got it. Same would go about swaybar issues or anything else.
3) Since this is either an intermittent issue (not reproducing reliably now, and most tellingly isn't reproducing in a dry, level parking lot) or not happening at all, I may have just been a bit...ahem....histrionic about my new ride.
Will keep an eye on though and will watch the pressures. Thanks again.