I think in some cases it may help for the spouse to move out to provide space and time for healing.
In my case, my wife and I are generally cordial and we're good parents. I'm not so sure my wife needs or wants the space. We did ague this morning but she seemed to be looking for reasons to stay rather than go. And, this could all be wishful thinking on my part.
If there's a lot of constant tension and arguing, I'd definitely want to separate for a while, but I'm not sure that's the best solution for me and my wife because the boys would be distraught and there'd be a whole new set of problems.
So, as usual, I don't know the answer; my guess is that sometimes it helps to separate for a while and other times it doesn't.
