Hmmm...how bent, and how permanently?
When I first got my '6', on the second or third day I noticed that, on a flat surface,
it "rocked" just a tiny bit (yes, it rocked in other ways, too).
Anyway, the next morning it was back to flat, and I've noticed no curving since.
So, while there is obviously "elasticity" in any such object,
at least with mine, there was also a certain "memory".
But perhaps yours went beyond some critical point.