This wasn't a bang bang play. Bittle was fouled right as he put the ball on the floor near the corner.

He didn't stop on the whistle but continued to the lane and basically jumped into a group of players. Happens all the time. Miller was frustrated and it looked like the push was more of a "stop it, you're pissing me off" type of reaction.

I would have preferred to have the ref not go nuclear with a tech but that's how some refs like to get noticed. It wasn't like the game was suddenly going to get chippy.