Sorry, but I'm with Pat. Any man that launches an arrow over his brother's shoulder is an idiot. I'm pretty sure that's page one of any hunter safety course - Be sure of your target and beyond. Doesn't matter if he was crouching, kneeling or standing on his head - he shot at his brother. You'd think with 30 years experience he would know better. It's people like that that give hunters a bad rap.
And even more amazing is the fact that that he must be proud of his story and scar if he had to tell you about it and show it to you. I think if I was in his shoes I'd be too ashamed of myself to tell anyone...