By the time the police got there, he had talked to the dispatcher again, and was sitting on the ground, presumably not holding his shotgun. Why would the PPD shoot him?
Besides, up to this point we have only his story.
That and the audio tape, the white bag full of cash, and the broken glass of the break in and break out. They don't mention what condition the inside of the neighbors' house was, but I suspect the burglars were not neat about their business.
Reports are, however, that he's in jail waiting on his buddies to bring him his bail money.
They're not coming.