This reporter can attest that as long ago as 1973 it was L.A.P.D. policy to cuff prisoners' hands behind their backs, even when stuffed into the back seat of a pig-mobile. The likelihood of the victim trying or even being able to escape is merely the usual lying from abusive pigs.
Added bonus: Lotsa horrifying pictures of Ms. Nguyen's suffering. Fuck Ossifers Shin & Oh w/ a horse dick.