As someone who lost all of his BTC to MtGox: LEAVE HIS WIFE AND KID ALONE. This has nothing to do with them, don't be fucking immature.
Well, the kid certainly is. But why are you so sure about the wife...? She could be involved in many ways at various levels. You don't know. Just like you don't know anything about Karpeles himself either. Or more importantly, the truth about Gox. And that's what makes people frustrated...