Under-map Glitch on Standoff - Black Ops 2 HD

I ran into this guy on Standoff using an under-map glitch. I tried this myself in a private lobby and was able to reproduce: - Class a tac-insert and a crossbow - Go to the stairs in the video and place your tac-insert at the top of the rail - Use the crossbow and hit the white picture while running at it so your player dies - When you spawn press jump repeatedly.