On what planet is it OK to leap out the car when you get pulled over? This IMMEDIATELY escalates the situation. Not only that, he hesitated to put his hands on the ground when ordered and then stepped toward his vehicle instead of going straight to the ground (but lets be real, cops mind were already made up by then).
A series of missteps by breh that may take the cops off the hook for their aggressiveness.
Stop it.
The police escalate these confrontations. Even if he got out early his hands were up. He's no threat. Calmly tell him to stay there, run the plates, check his ID, apologize, and send him on his way. Cops swarming and yelling makes people nervous and they lose their composure especially when they're innocent. That's why the trained professionals need to communicate in order to calm the situation and walk people through things step by step instead of being aggressive from jump. Scared people don't always react logically.
A simple, "Sir stay there and don't move" would suffice but instead they gang tackle him.