You dont need to Delete the association. Just add a attribute on the wife entity to Active(Boolean) and make the association 1 to *.
I guess ethics are finally implemented in software :-D ? Note that you are still allowed to add an association called 'child' ;-)
What's the error message?
Try change object for husband or wife and set the association to 'empty' (no quotes).
Export module, drop module, import module?
Where did this easter egg go? I miss it!