That looked like a seat of the pants kind of move that was a good heads up critical stress thinking. Even some of us that would not preform a maneuver like that on any given day may do just fine in the heat of the battle, or the deer in the headlights reaction for some.
As for the door not opening, I couldn't see any reaction to someone inside the truck holding it, but the crumpled fender is the likely cause from what I saw.
Last month I was on a EMS run where the chase reached 90+ mph and after going off road through several ditches w/o rolling we loaded the cuffed pt/perp.
After reminding arresting officer of the SOP of a LEO present in our rig when pt. is cuffed, the cuffs came off till later.