video shows shocking moment a boston police officer was shot in the face just seconds .
the video shows how angelo west , 41 , immediately jumps out of the car and shoots officer john moynihan , 34 , under the eye at close range after the policeman opens the driver-side door .
west then fires at the other officers as he runs across the busy street .
officer moynihan , 34 , was released from the hospital friday after weeks of recovery .