Hard to say what happened without the dash cam video. Howerever, in my mind, the existance, or not, of the sharp object is negligable. The fact that the officer was being drug was an asault on the officer and the vehicle a deadly weapon! As to the passenger being in jail, if he resisted arrest for any reason at all, he's right where he belongs. You simply don't resist arrest, for any reason. If you think you're wrongfully being arrested, and you have a funtional brain, you go along with it and talk to an attorney afterwards! Resisting arrest, tagged onto your charges, sure don't look good in front of a judge regardless of how inocent you are of any other charges.