So...in short, you're saying it "crumbled" with that one mistake, having hung in decently enough in the first half? That the manager could not have handled the HT dressing room situation better? Or perhaps there is no blame for the changes he made in the fashion he made them?
Look. You want to hang it on a stupid mistake, fine. Free society.
I think if we're looking for a "shift in meteorology" via a "winner" it would surely be in this precise sort of situation, where we've done what we apparently do on a semi-regular basis in big games, yet have the players, shape and potential to come right back into the game and win it. I certainly thought at HT that Mourinho would be geeing them up, telling them to forget the mistake and focus on the good stuff. I certainly would not have expected to hear a brawl erupted on his watch in our dressing room, one which appears to have contributed heavily to that disgraceful second goal right after the restart.
We have different ideas on who is ultimately responsible, that's for sure. And it is impossible not to hold the context of reasons given behind his appointment into any equation IMO.