Funny how these things end up in the press when things arent going well. Rio clearly isnt in the long term plans, Hernandez (understandably) wants to play more and could end up with a move which benefits him and his agent if given the chance, and Zaha, by all accounts needs a firm hand. The refusal to allow him to go on loan to a London club tells you all you need to know there.
I think, in general, fans need to decide what they want the club to be going forward when calling for him to be sacked.
A lot of people on here were anti-Mourinho, the suggestion being that "he doesnt stick around long enough". There's some argument that in modern football "dynasties" just dont happen anymore - clubs appoint a manager, he has maybe 5 years then everyone moves on. Its proved relatively succesful for some clubs - so you can make some arguments for that being applicable here.
As it stands the club clearly went the other route and picked a man who they hoped would stick around long term. He has a huge job to do under massive scrutiny, and with an ageing squad to rebuild he hasnt been given the help from the board that he would have liked. It evidently hasnt gone well and you can debate why as lng as you like.
I can see why some people want him sacked. Its tempting to think that if he goes the problems will be solved. I personally dont think that's the case. The club is in a msssive period of transition and its going to take a while to build a new squad capable of challenging for the title - we need, for me at least 7 or 8 players, who will themsleves need time to gel.
Whether Moyes is the right man to take us forward, I doubt, but I'd be sad to see the club revert to the Chelsea model of sacking a manager without giving him a chance - especially given the job he's being asked to do.