I came back from camping today with the Bonnie loaded down with gear and the Fam, and noticed the left rear wheel was very noticably cambered in at the top...when I pull on the top of the tire it comes out quite a bit then will move in toward the center of the car again at a distinct stopping point.
Have my strut bolts worked loose causing this with added weight or is there an upper control arm/ connection there?? Any ideas would be great so I can get a plan going in Thanks!

Pull the tire and check it out. Only other one that sounded familiar to your description that I know of..had loose strut to knuckle bolts.