The point is that the husband needs to sit down and talk to his wife. He should explain why he brought the weapons home and let her discuss her concerns and not simply dismiss them out of hand. He also needs to reassure her that firearm ownership is extremeley safe (a lot safer than pool ownership, for example) and make sure she understands why this is so. Many people raised on reflexive anti-gun policies will change their minds once the benefits of responsible gun ownership are explained.
However, if, after all that she still says "Either the guns go or I go" than he has a decision to make.