This is a damn cool illusion, but i believe I revealed the trick after seeing it once. On the top of the "Sword" There is an glass/plastic plate which we can't see. This he lays on. When he gets "impaled" the sword gets lowered, he bend, and an fake tip come up from his "stomach" (probably hidden in the pants or W/E ) I can say this beacuse I can see the height of the tip has changed when get taken up from the "Sword, and she just press the fake tip side him and in its container.
