I have the luxury of watching this from the comfort of my chair. A few thoughts...
- EXCELLENT situational awareness. Got the door open as soon as he saw the guy.
-Excellent gun skills. Shots on target from seated and holstered into an armed subject behind him, to his left, while exiting the car.
He didn't open the door, the thug did. That actually helped him. Because he was able to shoot with both hands. Thing is, he could have easily shot through the door too.
I'll also add, if you get a door open and you are sitting there, you need to get a foot on the door to keep it open.
Slamming it open, it could easily bounce back, catch your leg, knock the pistol out of your hand, etc...