Sorry, I think I have to do this (feel sorry for myself, then get mad, vent) to move to another stage. Face reality so that I can then leave the mounting frustrated situation and go forward.
Maybe that's why they do all that harmful abusive fighting before they (WS) leave. To work themselves into an anger so they can justify to themselves moving out/on. Dysfunctional as it is, in their sitch, same coping mechanism never-the-less.