I could be wrong but I'm pretty sure the "LRT" is NOT an ultimatum, it's going completely dark and cutting off all contact. With kids that's hard because you have to do handoffs, but you keep your interactions and words to the bare minimum, and only business.
It's giving them a taste of what life is like when you're truly gone.
Someone who has the book handy should look it up so JKS isn't getting the wrong idea.
JKS, an ultimatum is effectively the same as walking away and saying you're done!
Peter
Married 18, Together 20, Now Divorced M: 48, W: 50, D: 18, S: 16, D: 12 Bomb Dropped (EA, D): 7/13/11 Start Reconcile: 8/15/11 Bomb Dropped (EA, D): 5/1/2014 (Divorced) In a New Relationship: 3/2015