I gave up on the "below the spine" stuff a long tie ago. I actually don't CARE about that anymore....lol.
But your latest video only makes me think more that his guts were hit.
Let's look at the worst case scenario. Straight down shot on a deer. you go to one side of the spine.....but you're STILL gonna get some vitals or intestines.
Again....leave the spine part out of it.
I was thinking, sitting in a tree today.....I wonder what the consensus would have been if "I" posted that and said I'd hit him Saturday evening and he walked by me, yesterday....and I'd photo'd him....lol

Ya think he'd live?
And again...for the record....I'm no deer....but I was at work the morning of the day they removed 3' of my colon....after mine was punctured 3 weeks prior. So hypothetically.....I could have gone a month or more after mine was punctured before I died.