Agreed. One of the reasons this scene works for me is because our protagonists aren't acting under their volition and that they don't consider this a good thing -- this isn't the justice they'd choose, and they're clearly horrified by what they've just been made to do, particularly Hazel, who's been through hell already that night. The other is that there are consequences to the act, so I didn't put the book down feeling that either camp got out unscathed for their actions, though I suspect the full extent of some of it may not be explored until later stories.