I said it COULD be man-made...
Indeed, several hoaxers WILL BE working independently with film crews this summer doing four differently documentaries, so some of this could be nothing but heresay spread around to confuse the public...and voila! then their production comes out.
But something odd IS going on over there. What you don't take into account that there are groups of "watchers" watching those fields all night for signs of hoaxers, some with good equipment. I'm not going to convince you because everything has a simple explanantion and you ignore the nnknown and unfounded other 20%.