It may, as in your case, still proves futile as far as saving the marriage. However, in many (perhaps most) cases, it can.
Ouch, that was quite a stinger, yet I would like to see the numbers because quite frankly I see more marriages sinking than being busted. Yet you say in most (but not mine) cases DB works?
What would say the ratio of busted divorces is?
May All Who Seek To Take My Life Be Put To Shame And Confusion; May All Who Desire My Ruin Be Turned Back In Disgrace. ~Psalm 40:14~