Ouch, doesn't look pleasant! It does look like a fun trip, sans the cactus attack.
Reminds me of the recent Bradshaw run, when Brian (sorry, don't know his screen name) came back from a short bathroom hike in the AM and asked if I could help him out while handing me a pair of needle nose pliers:
Why You Should Always Carry Tools . . .
Same deal, those suckers were DEEP in his skin. Require a ton of force to pull them out. Pretty sure his came from one of these:
Why You Should Always Carry Tools . . .