Noble bloodlines in history have faced little consequence for much worse than a village raid by virtue of that bloodline. Hell, some would say the modern politician is a good allegory today
Regarding lords letting them all out again, it's kinda realistic, nobility back then was a big deal, rival lords would routinely be prisoner swapped, ransomed or just let go with oaths not to fight again, which they'd always break, over and over.
On occasion I do enjoy walking over the corpses of my enemies
It's a supposed warrior, on a battlefield, covered in armour and a bears head, not some tipsy socialite walking along Londons Soho. There has to be something better that could be done than this.