Fox news is reporting the perp died from a self inflicted gunshot. They didn’t say if he was hit in the hip or anywhere else. That doesn’t take away from the fact that the armed citizen and the car chaser stopped the perp from carrying out any further mayhem.
Since he worked as a security guard at a waterpark and still had weapons in his previously unregistered vehicle, he might have intended to carry on his rampage there after the church.