I felt that Phil's wife was ragging him but he would have did it anyway as insult to tony, or cause he felt he had to do it, obviously Vito was going to die but it didn't have to be in such a manner, him just disappearing would have been good enough and proved the point. Phil has also shamed his own family too, in my opinion, and made things harder for all involved. I think there will be a war which is what's needs to happen I think.