The man is a monkey... even if you agree with the moral arguement of getting booked to clear the suspension, if he's so "clevvah":-
a) Publicly admitting it was obviously going to get him loads of criticism and possibly further punishment, therefore negating the purpose of doing it in the first place.
b) there are many other ways of securing a yellow card (e.g. deliberately handling the ball, giving the ref. some verbal, etc.) which would not have risked further injury to himself and another player, so why choose the option with the greatest risk?
I cannot see how any additional punishment can be administered on him as, in this age of compensation culture, you have to assume he would be straight to his lawyers (the one's that DO have brains) and wriggling out of it.