Treat him the same way you would any defective part comming out of a press or forge because he's clearly defective.
Tree stump. [The stump is split with a wedge, the perp is forced to sit on it with his appendages in the slot, and then the wedge -you have already guessed it - is pulled out]. This would be just, right, and extremely proper.
Melt him down and recycle him?