Actually, this is DBing, too, if you read the book. Last Resort technique.
You've done your very best and it sounds as if you've had enough. I understand. My MLCer wasn't at home but dragged his feet on divorce for 3 years, while he lived with someone else.
At some point, things have to change.
One good thing about the time going by and not having an abrupt divorce is that it gives you a chance to detach emotionally. I think the abrupt divorces hurt the most.
M: 16 years Bomb 4/07 OW 20s long gone Divorced 11/09 I remarried New Guy Cooperative r w/X regarding D