Congratulations on making it through a difficult night. Polite is easier than angry, but distant and proud is hard to take. I can see you have reconciled yourself to the D happening. I guess that, given where you are, that is a positive thing.
Your W's anger comment is interesting. I haven't gone back and reread your four threads, but is her anger something your have talked about recently? I am trying to have discussion about forgiveness with my W, brokered by my pastor, because (1) forgiveness would ease my feelings of guilt, (2) harbored anger cannot be healthy for W, and (3) whatever relationship we have in the future, we will always both be the parents of our Ks, and it makes sense to resolve the sources of anger. Would it make any sense to talk with your W about S5's conversation, and approach the anger topic that way?
