When a cop pulls you over and tells you to get the fuck out of with their gun drawn, you do whatever the fuck he says. PERIOD.
Also, driver must have been doing some fucked up shit to get pulled out of the vehicle like that. I've been pulled over a few times and I always roll down window, leave my hands on steering wheel and clearly state what I am going to do. "i'm reaching into the glove box for my insurance"...etc.
I've never had a dick cop talk shit to me because I know the rules. Especially in Vegas where there is a million whacksos...cops are going to be on edge.