is like a modern tale of epic Greek like proportions, of our protagonist being slighted by the Gods through his disability, overcoming hardship, then feted by the same Gods
MummyMoss, that's an interesting story, but it's not the only story we can tell about this case.
There's another one. The one of the little girl who grew up strong and clever. Everyone told her she could be a lawyer. She'll go far, she said. So she studied and worked hard, but then, right before her finals, tragedy struck. A riding accident left her in hospital for 6 weeks and with a shockingly uncertain future.
'Do I want this?' she asked. 'Is this really the life I want?'
She got better, and took her finals because she didn't give up on anything. She achieved very high scores, but she knew she'd never waste her life doing something she didn't utterly love. She moved to the big city and took hold of her own life.
'You're too old!' they said. 'You're not thin enough!'
'Watch me!' she replied, and she took the world in her hands, and things were going well for her. She loved life. She lived well. She was loved.
Then a man happened across her path. She wasn't sure, but he was exciting. She slowly started a relationship with him, finding fun times, tempered by rows. He blew hot and cold, and she couldn't understand it. She always seemed to have something new to apologise for.
She wanted it to work. She went to his house to spend some time with him. She drove through the front gates of the estate, waved to the security man who would keep her safe. This was safe - only two break ins to the perimeter in five years. She drove on to the house where her man was, feeling the world was at her feet. She could achieve anything.
She didn't know that she was driving towards the man who would cause her death.
Of course there are stories. People have told stories to make sense of things for thousands of years. I think yours is an interesting one, and it gives an insight into why people want him to be acquitted, the tragic hero is, like you say, a loved protagonist.
But I personally don't buy it.
I also don't buy 'there for the grace of God...' If it was a tragic accident, it happened because this man had a thing for firearms and was careless in the extreme.