The other thing that I would reccomend is filing with social services to the effect that the H is an emotional danger to his children... But THAT is drastic.
Right NOW mb28's H thinks the children are unharmed...
Children feed off the energy of their parents... if they are miserable, the children soak that in... they don't SHOW it, but they do absorb the drama...
Somehow the WS needs to learn this point... they need to learn the affair isn't about chosing a mate, its about protecting your HOME, your wife, your children, and yourself.
Emptying the HOME shows the danger and the damage...