My advice would be to talk to a good FT (family therapist) about the arrangement. Well-intentioned parents can easily cross the line between "wanting to make it easier on the kids" and "CONFUSING the CR*P out of the kids," and causing real emotional harm.
I do also think your husband needs to feel the consequences of the decision he's making to flee his family, and this type of arrangement really doesn't do that.
Please talk to someone much smarter (and more experienced) than me on this one.
