Hey vince, I heard a similiar tale. A friend of mine is a cook, and warned that whenever eating scallops in a restuarant, make sure that they aren’t covered in a thick sauce & are irregular in shape. He said many times when the price of scallops is high, cooks will "punch" scallops out of sole. Amazing.
I’ve never heard of punching scallops out of sole. Usually they use shark.