Well I was lead to this site when I was researching Narcs actually.
I read a lot of websites, watched a lot of videos, and even bought and read some books.
He ticked nearly all the boxes...just like MLC.
I don't know what his label is. Depressive, Bipolar, Narc...or just an extra spicey MLCer....
It hardly matters now.
Whatever they are you have to deal with them basically the same. If they eventually get better they were in a MLC...if they don't... well it was something more permanent.
But this website is helpful not for dealing with them, but for dealing with you. No matter what is wrong with your spouse...or ex spouse...it is you who is left to pick up the pieces, and these people can help you do it.
That being said it never hurts to read up on all the potential disorders. Not so much for getting back with them, but more in managing your interactions and expectations.
You know this is MLC when you have played emotional hot potato with a pair of crotch-less tights.