I thought the film dodged a bullet, literally and metaphorically. Geoffrey Dean Morgan was the stand-out contestant, after all, but survived, and in that survival, the horror of the other guy's (Brad's?) death appeared to be completely forgotten by the cheering audience.
Now, what I pictured happening was, someone would chicken out of pulling the trigger, and with a fifty-fifty chance, it would be most ironic if it was dangerous sports guy. Or (and maybe as well), it would come down to Rick, with a gun that everyone *knew* had a live round in the chamber, and the moral dilemma would be, was it acceptable, with the element of chance eliminated, to allow a man who didn't *want* to die, to kill himself, on TV or at all?
I didn't watch the first part of the film, but I would have been surprised if they didn't write in a clause that if the final contestant faced that possibility, he/she would lose the money, but not his/her life. Of course, that presumes that anyone would really have to draw up rules for such an eventuality, and I would prefer to think of this as a total fantasy.