Hate to be the johnny know it all guy, but next time leave everything where it is. If that guy goes to meet his maker, the measurements taken by chp or police could prove to be invaluable in court in case his family or someone sues the city saying it was there fault.
Glad the dude is okay and way to be the good samaritan, but be careful helping people at those scenes. The state court ruled last year you can be sued for any injuries caused by moving the victim.