Well, I fragged it and it actually went very well. I used a dremel and cutting wheel. I cut through the skeleton, most of the way. Then I put a flathead screwdriver into the crack and twisted it, to break the remainder of the skeleton. Then, turning the Echino over, I sliced through the flesh with a scalpel. It was very easy and healed VERY FAST. The next day, the edges already appeared healed!!