Not sure where the "offensive posture" came from. He was still smoking a cigarette, never made a move to take physical action, never made a move to get a weapon. The officer stepped to him.
All I see is a guy who was beat up, called the police because of the physical violence done to him, and possible theft of his property. He was pissed because of the 45 minute response time. While it is obvious his attitude sucked, it should also be within the police mindset to defuse the situation. There are many ways to do that, but the officer chose to take one that, it seemed to me, to show his power. Not sure that was the right course of action to someone who is non-threatening and unarmed.