I read somewhere (maybe here) that water is the only liquid that expands in its solid state (ie. freezes). My driveway raises 3" above my garage floor every winter. This year, my garage floor also raised 1/2". And if you've watched the news lately, it's full of stories about water and gas lines freezing and breaking, because the frost level is so deep this winter. It's just been a nasty, nasty winter. As for the stabilizers, owners' manual says they are for stabilizing, not supporting the weight of your trailer. I know on my old trailer, the door wouldn't close properly if I cranked the stabilizer beneath it a little too much. But it would function fine once I relieved some of the pressure on the stabilizer. I agree with Rustic Eagle and Jaygiven: These things are designed to flex - otherwise they'd break apart going down the road. I'm sure it will straighten out just fine once it's leveled on its tires and tongue jack. JMHO.
2013 Eagle 266RKS
2011 Ford F-150 w/3.5L Ecoboost & H.D. Tow Package