Poor little guy. Like others have stated, those cuts look mostly superficial, so just make sure they don't get infected and I'd think they'd heal up on their own. Hope he gets well fast.
I actually know someone who will shoot any snake she sees on sight (has also apparently plugged some holes in a garden hose when her husband was pulling it through the grass and she thought it was a snake, too). This stems from a childhood trauma where her brother threw a garter down her shirt, and since it couldn't get out (her shirt was tucked in) it bit her several times before she could get it out, and has been afraid of them since. Granted that is an extreme case and most likely not the case with this woman, but things like that do happen. Not that I agree with the violence, just giving another point of view to look at. I do agree that she should have been prepared since she let him get it, though.