I read some of his stuff. As you may recall, he caught a lot of grief from a high ranking officer for that, and I think they threatened to send him out of the country if he did it again.
Yes. But not to prosecute. Someone was embarassed. He did not commit any kind of crime.
On the other hand, the LTC was lying in the street bleeding from three wounds, waiting to see if he would pass out before, or after the terrorist came out to finish him off. Good thing the Sgt Major happened along when he did. If he hadn't Michael Yon might have just had to save the LTC's life. Can't have that now, can we!