Sorry if I seem stern, there are many a BS that make excuses for not miving to Plan B...mostly they don't think it will 'work'.

Think of it as dealing with an addicted individual. Plan B is removing yourself from the individual, but most especially from the addiction and the addictive chaos. It's not meant to cause the addictive individual to quite their addiction, they is entirely up to them...it does show them what they can lose (family, W, home, respect of kids/family/friends). It allows the A to be brought into the forefront so they can try to get all their needs fulfill by their addiction, and it will be lacking...

Plan B doesn't 'work' persay as it preserves...

Think of Plan B as a time capsule...you want to hold onto the love you have, and keep it safe from the outside influences (WS and the A). The A will implode in it's due course, Plan B allows the BS to wait it out...