Sorry I'm late. I switched over to the WCL semifinal right after the final whistle and have been too busy to comment ever since. Anyway, here's my take....
I think this season has, unfortunately, played out exactly as we all should have been expected. The moment we finished top-three last season my first thought (besides "yay!") was, "be careful what you wish for." It was obvious to everyone in and around the game that our squad had nowhere near the size or depth to be able to compete in four competitions this year, and that consequently we might well fail in all of them. We did get some great signings in the summer, and then a few more in the winter break, but given the number of players who left or were otherwise unavailable the net squad size didn't actually increase by much. Then the situation was exacerbated by an unlucky rash of injuries, including Ella Toone for most of the second half of the season.
What I think we've seen over the last five or six weeks is the unfolding of a virtually inevitable scenario: We had been running on fumes for several weeks, trying to stay competitive by sheer grit and determination, until the tank finally ran completely dry in the second half in Munich. And that was it: We simply had nothing left in the tank for the game against Tottenham, and then again this week against Brighton. We had stretched too think, for too long, and finally snapped; everyone was just physically and mentally exhausted. Too many matches, not enough rest, end of story.
As I've said many times before, I just don't see how Skinner can be blamed. I don't think there is any manager in the world who could have done any better with what he had to work with. He isn't responsible for us having an insufficiently large/deep squad, nor for our bad luck with injuries. Indeed, I think it was an extraordinary accomplishment to get as far as we did in the WCL and to make it to the League Cup final.