You can see on all the close ups that the seed heads, both in the standing crop and in the downed stalks, were quite bent. The crop was very dry and completely inflexible. The seed heads had thus stiffened into their bent position and were not possible to straighten out. (They broke when I tried.) However, in the swirl at the centre of the formation you can see that the seed heads are straight, lying parallel to the direction of the stalks. It looks as though the swirling force have been strong enough to straighten out the seed heads. I find that very strange, however, in such dry, inflexible plants. Did the force that made the swirl, in some way also have the capacity to soften the stalks? Surely, mechanical flattening could not have produced such an effect.