I don't know if this has been brought up yet. TBH, not going to go back and read every post.
However, I see it as implied consent and the courts will have to decide where the line is.
Example- You play in a hockey game and get in a fist fight, because it is hockey, under normal circumstances no charges. If you go out in the parking lot after the same game, and get in a fist fight, then there can and normally will be assault and battery charges depending on the vernacular in that particular jurisdiction.
Same thing with an MMA fight, UFC etc. Do that in the ring, you are fine. Do it in the bar after the fight is over, criminally liable.
Pay a girl for sex that is hanging out on the street corner, probably illegal and considered soliciting for prostitution.
Declare yourself a "Film Director", and start, "production company" pay a girl to have sex with you in a porn film, legal.
Now, in the case of hockey, there has been some court cases and there is now precedent as to what is a "normal" hockey fight" and what is a criminal offense. If I recall correctly it is some aggravating circumstances like you take off your skate and try and slice a guy across the neck etc.
What is NOT relevant is how much your are bleeding, if you have two swollen eyes that you can barely open, and all your teeth are knocked out, if you had any to begin with.
So, take the hockey fight analogy and use the same parameters for the Bauer case.
Implied consent to fight in a hockey game, and you could very well come away looking like you just got hit by a train, just from fists etc.
Implied consent to rough sex with hitting, choking etc..
IMO, the courts or precedent will have to decide IF and where that line is....
Would you want to be arrested in a hockey fight just because you are good fighter and you knocked the s*** out of your opponent? Or a UFC fight.. Just using your fists, feet etc.