No, that isn't the way this should be handled. He was dealing with a possibly armed suspect, and the protocol is to bring the person to you and cuff under cover, in either a kneeling or prone position. You aren't going to go to him, in case a person comes out of the room with a gun. Those would be very poor tactics.
His verbal commands and condescension exacerbated the situation, seemingly causing more stress in Shaver. He probably needed to be more calm and direct with his commands. Tactically, it was handled correctly (in my opinion) except for the part where he shot Shaver. Manslaughter would have been a fair verdict, it seems. But, still a high burden in court to reach that.