The implications of bringing Ferguson back is much worse than letting Moyes finish this year at the very least. If it's only bad results I am okay with him at least finishing half of his contract, if he starts doing a Roy Hodgson selling off good players and bringing in more people from outside then it will be time to take a hard look at him.
Until then, give the man more time I say.
From a performance point of view, I completely agree. Moyes needs time to try and figure out what isn't working and implement changes.
That being said, the Glazers might see it differently. If they feel there's a risk United might miss out on CL revenue then they may knee-jerk and do something stupid.
The table will start to take shape soon, and United don't want to be like we have been for the last few years, facing a massive uphill battle this early on.