I'm not sure the club agrees with your assessment.
The lack of investment in the summer and Woodward's post-window briefing would suggest that the board no longer feel Mourinho is the right person for the job (too "short-termist"). Mourinho's general demeanor since, seems to confirm that the feeling is mutual.
The utterly appalling performance at Brighton (probably the worst in Mourinho's entire tenure) shows that this whole sorry mess is now rubbing off on the players.
Essentially, it's over (or at least it very soon will be).
Unless you're Ed Woodward, you're not privy to that information.
The board briefed the press as soon as the window closed as they were aware they'd most likely made a mistake in not backing the manager and buying him new CB's. We've all seen Fergie's quote flying around here about him being the manager and some people, including Kidd, not thinking Yorke was up to it. For some reason, we're not aware of but most likely the value in the market, we decided not to spend big this summer.
If you think that was a blatant effort to undermine Mourinho because they want him gone, you're wrong. They would have sacked him before now if that were that case.
The Brighton performance was rubbish but lets not get carried away here. It's the second game of the season, I can't remember a season where we didn't lose to a bottom 5 team away from home and our players have a hell of a lot to answer for, for allowing that to happen. Our captain himself said his 'attitude wasn't right', so that's the kind of shit show we're working with.
You're wrong if you think it's over. He'd be gone already if that were the case, he'll still be here next season.