This is not Morrison killing of Jean. This is later writers not wanting to deal with it, or being told by their editors Jean is not coming back, and retconning the WHR to be some kind of afterlife.
He killed Jean, and had whatever popped out of the Phoenix egg erased the potential timeline where whatever that was popped out of a Phoenix egg.
Unless there is some epilogue that I never ran into, it is just about set in stone.
Last edited by numberthirty; 03-28-2017 at 01:17 AM.