Thats some horrible damage. We've had storms in Florida that have put airplanes into balls of metal, not a pretty sight.
I saw an interesting item on Sportys called the Aerospoiler. You put it on the top of the wing and its supposed to spoil the smooth air flow over the top. I doubt it'd stop a thrashing from a tornado due to it being just pure force but I do wonder how effective it is on preventing planes from flipping.