I try to offer these people a way out that lets them save face. As I see it, the ZAP is a great way out. Just don't initiate force again, and you won't face any retribution from me. (Well, if you have hurt one of my kids in the past I can't promise to not go insane and violate my principles, and I don't believe it would be right for me to do so ... but you have been warned.)
And please don't forget.