I am not a trainer nor animal behaviorist, it sounds like the dog doesn't respect your or your family, and is now testing you. How come your wife didn't finish what she started? Personally I would have made the dog go to bed. Instead of kicking the dog in the rear she should have grabbed her collar and escorted her to her bed. I think your wife needs to start working with the dog so the she understand her place in the household. NILF would be a useful tool to use at the moment. My dog (german mastiff) tests me sometimes as well. When I tell him to do something I expect him to do it. Even if he is reluctant. He understands that I make the rules and he has to obey. Hopefully someone more experienced can offer you more advice. Keep us updated on the situation.