If the arrow didn' t pass through, you didn' t hit the " dead spot" . You hit bone, most likely a shoulder. That' s how he lived.
I' m not arguing that, and maybe " Non-Vital" is a better term but all I' m saying is that the shot looked lower than the back bone and definitley didn' t hit a lung. The deer lived for 2 more weeks and was healthy to I' m sure I just hit muscle and nothing vital. The point is it happens. Is it a bad shot? Yes. But it happens a lot, deer jumping string is a good example. It' s gonna happen no matter how much you practice.