Just caught up with your thread and it jogged something in my mind.
http://well.blogs.nytimes.com/2015/0...rcissist/?_r=0
The link connects to an interview with a family therapist who wrote a guide book about divorcing narcissists. I have never read the book, so I can't tell you if it's any good. But it's telling that somebody felt the need for this book to be written in the first place.