If it's like two parents, then one of them is abusive, and the other one is trying to gently steer the kid away from the abuser.
Sometimes authority figures need to be undermined. Doing so is not "vilifying" them, even if the abuser might see it that way.
Why does the situation need to be "cooled," exactly? There aren't any riots over this. The only person who was harmed in any way was the 14-year-old kid who was arrested and interrogated at length without a lawyer and without his parents. Why are you more concerned about the feelings of the people who did this than about him?