Come on mate, I'm not even a Utd fan but if you guys let Moyes get into a groove, grow in confidence and motivate the players as he can, then you guys are going to be a force. Your side isn't particulary good at the moment beyond central defence and the first choice strikers, so he's still working out the balance. Perhaps you're a little too used to success, to realise that every other club in the division is allowed to win against you too and they're trying just as hard as ever, especially considering SAF has gone and they want that scalp. Take it on the chin, accept you probably need 2-3 years of transition to buy players and get them playing how they need to, and then I expect more titles to come.
Plus it's very unlikely that the side will fail to achieve top 4 this season, so I wouldn't be too worried.