I can guess on how my husband does it when he does. I'm not sure he really does ever. I think he just gets more clever about it. I think he thinks ahead about where he wants consequences to affect things and I know he is really really good at being so subtle that it does not ruin things for his gain or things that can roundabout ruin things for him but still get whoever. Although he and sometimes I are the only ones who know it's still getting back at the person and satisfying the urges without serious consequences. He is also careful because he has no desire to go to prison and screw up what he's worked for. Although he's confident he could get out of just about anything he chooses not to risk it. Like I said though I'm guessing. I do know he messes with people's minds very subtly. And he's very good at it.