When the bible says that "husband" is the head of the family, he best understand, that he, the husband must answer to "who", Our God of course! A wife is in understanding of this. Both must help each other to be a saint. A husband can not ask or imply the family to sin. Then he is out of place. He the husband is to treat his wife as Christ's Church. That says a lot! If he does not, the wife , according to the bible, Gods' words, is to approach her husband. Then she can ask for a witness or 2 others to approach him.
The Law says, treat your neighbor as yourself. That goes for any one. Yes, a husband should be the head of the home. He best have a Rosary with the family, he best do as Christ would Love His Church. Again, it goes for either wife or husband.
When we spank our children, it is to bring to light and a reminder of their evil behavior, and spanking is mortification and can be an embarrassment to the child. I will slap a child's hand before they touch an outlet, out of love!
To slap a wife with adultery or husband does not take care of the issue in the soul and mind of that person that you can not see. A priest does not slap penitents, Our Lady would not approach a sinner in this way either.
When people say no to God and do their own thing, and are in Mortal Sin, slapping and such does not make things right. Only would cause drift and parting.