The infraction of not having an id card is what precipitated the crime of obstruction. But, yes, I would have just handcuffed him and carried him to the car.
Didn`t you mention something about applying presure to some painfull spots?
I wouldn't worry though. Because its in California, with any luck, he'll get off and be offered a major book deal over his ordeal, the state will award him punitive damages in the amount of 6 million dollars and all the officers will not only be fired, but also will go to prison for 30 years without the possibility of parole.
Good (30 days of prison should be enought IMO)
Edited by fallacycop, : typo