[mbeardsley]

There are a few issues with this...

I had the same problem, and they fixed it by replacing the seat frame. Also, the early 2008 Skys had a recall for seat bolts that did not meet specifications.

Try this, simply try (while the car is parked) shaking the driver's seat back and forth, and compare how much it travels to that of the passenger seat.

They should both move the same amount (very little). In my case, the driver's seat was significantly looser. Now that they replaced the seat frame, both seats are very solid.