I agree PA's have a "hidden rage" (sorta the definition) but I'm not sure "explosive rage" is a behavior always present with narcissism. I believe the explosive rage is more consistant with the PA as they may be unable to keep their anger in check all the time.
I believe my X had a great deal of unresolved anger from the abuse she recieved as a child and the refusal of those around her to even acknowledge she was being abused or take action to protect her. She was never validated and was forced to stuff her anger down inside herself. She developed some self-destructive habits and relationships.
Just within the past year her biological father begged forgiveness for what he did to her, blubbering on her shoulder. She says it wasn't a pleasant experience for her (such confessions are made by tge confessor to comfort themselves, not the victim). More emotional abuse?
This thread has made me connect the dots of how volatile her and OMH's relationship is. I've heard her talk of how angry he has made her and her sitting beside me instead of him at times I now believe to be passive agressive behavior on her part directed at him.
"The answers are within you" (can't remember who). Unfortunately, so is the bullshit.