There's no need for Harry to appear on Mahmood's list of things to do, Atlasvue, because as everyone except him has realised it's all been thoroughly thrashed out and decided already
Interesting point about the grief stages of denial, anger, bargaining, depression, and acceptance though, and if this is right I agree he seems to be in the bargaining phase ... which just leaves the worrying thought of what happens when he gets to the depression part
Either way I'd be very surprised if he's an easy man to live with right now