In the words of Stacey keach, "If you can dodge a wrench, you can dodge a ball!"  Hmmm, they are calling it a "Flensing Knife.  The flensing knife I am familiar with is the one on a pole, and looks like an yard edger, or ULU, but RAZOR sharp, and used to slice whales, on whaling ships.
                                                                               Wayne