If you have ever been in a scenario similer to the one the Discovery channel has set up here, 6 or 7 guys working in sort of isolation. You will know that sometimes there is a guy in the group that gets to be the butt of jokes and has everyone riding him. On a boat is is usually the cook.
In this case it looks like Dorsey got the honor. He has a blog he set up after he left that gives somewhat of an inside look at the reality of this and other reality type TV shows. I will put a link at the end so you can go see it. Todd say's "the show is the gold mine", and I guess it was, and still is.
There are a couple of links at this site.
