the braves are just getting this unwritten rule stuff back at them

I might be wrong (it happens. rarely ) but it looked to me like Urena was aiming for Acuna. His arm, shoulder his whole body was not pointed at home plate, it was pointed to the batter. It almost looked like he was playing darts. A dart player who was throwing at 20 and then switches to 18 makes a slight body adjustment. Urena did the same thing.