Back to the original post, "how fast do you drive?" (Kidding). That's really strange how it's bent. As a professional driver by trade I've seen my share of RV's motoring happily down the road with their antennas full up and I'm amazed they are holding up a freeway speeds.
When I first saw your picture I was thinking it got snagged, but clearly the AC unit is much taller than the antenna in the down position. It's hard to believe wind force/air stream is doing that. Typically the air flow over the roof has quite a bit of spoil and turbulence right on the deck. But maybe the AC unit and another vent unseen is creating a funnel affect.
Too bad you can't put a Go-Pro camera up there to see what's going on.
Many times I see RV's flying by me and their rubber roofs have a huge balloon in the low pressure area and I only wish I could call them as they motor away to tell them what's going on, no one can see their roofs while driving, and all looks normal when stopped.
All the best with you antenna. Hans