Just to report back, when I got on my roof to look at my Birdview dish, I first eyed it up for any bending that might have occurred. I did that by sighting it edge-on from a couple of different angles. In both of those cases, the edge of the dish closest to me lined up straight with the edge furthest away.
The mast had not twisted, uprooted or been damaged at all. but the dish itself actually spun to about 90 degrees off of its due outh position. I looked for the marks I made to line it up again, but I did not see it. I ended up looking in the threaded holes that lock the mount to the mast. I turned the dish until the holes lined up with the circular marks the bolts made in the steel of the mast pole.
I tightened it down and got 99 west right away, but some of the other satellites were off. I think I'll have to go again with an afternoon of aiming and peaking.
My mast is buried only maybe 18 inches, because otherwise I would have had to entirely rip up a concrete walkway next to my house. With everything I did, including filling it with concrete and rebar, putting L shaped rebars in the bottom, and not tightening down too hard on the dish mount, instead of the dish bending or damaging the mast through the torque of twisting, the dish turned in the demon wind, was not damaged, and neither was the mast.
So even if you have some limitations as to depth of footing, there are things you can successfully do to avoid damage and be back up and running in good speed.