I think the advice and the attitude reflected by Miss Bratfield's post is very positive and will lead to healing.
God is married to the backslider.
Please don't give in to the temptation to look at your marriage as either God or him. That view is not biblical, IMO.
Of course, I'm not married and I also give great advice on rearing other people's children. Of course, I don't have any children of my own!