Man, the board already looked reckless and incompetent, but this solidifies the appearance. You can do crazy ill-advised things, but if you unwaveringly commit, we’ll always wonder if you’re secretly a genius. But when you immediately backtrack, we’ll know you were a fool all along.
That seems a lot be better than doubling down on a bad mistake to save face, but we do care quite a bit about about looking strong, don't we.
At longer timescales it is important to be able to recognize mistakes and reverse course, but this happened so fast I'm not sure that's the right characterization. There's no way they could already decide that firing Sam was a mistake based on the outcomes they claim to prioritize. Reversing course this quickly actually seems to me more like a reaction based directly on people's negative opinions, though it may be a specific pressure from Microsoft as well.