I just watched the full clip on the Discovery site here:

http://dsc.discovery.com/videos/dual-survival-season-2-episode-3-videos

I didn't have sound so I may have missed something. I admit that my mind closed at the site of him voluntarily cutting himself. Doesn't seem like a wise choice to me, especially by guys that are supposed to be showing us what TO do.

When I get past that, I'm left wondering: given the resources they had available, what were the other options to close up/protect a wound like that?