I've been thinking a bit more about this, and here's something else to ponder...
Ask yourself this simple question: does Alex Ferguson still communicate with Gary Neville?
On top of that, ask yourself another: would Ferguson like to know (in advance) what Neville is going to say on TV? Then finally, ask yourself this: if there's a chance that Ferguson is still in contact with Neville and they discuss what might be said on TV, do you think he would encourage him to illustrate something that might be beneficial to City's title bid if it were really true?
Personally (and admittedly this might be nothing other than total paranoia), I'm inclined to think Neville has spoken with (perhaps even been briefed by) Ferguson before giving that whole tactical breakdown before last night's game.
I think Ferguson realises that frustration can set in now that people are beginning to question Mancini from a tactical perspective and it's a potential weakness for him to exploit. I'm not saying any great thought has gone into that analysis (you can sometimes give people too much credit) but I think it serves as a handy distraction technique.
I spoke at length with one of the UK's leading sports psychologists yesterday (I speak with him on a regular basis) and I got his take on these 'mind games' and, naturally, as a psychologist, he attaches a lot of weight to them. However, people are generally barking up the wrong tree when they read too much into the subtleties of these remarks, etc.
The aim of the game is simply to be a nuisance, to distract the other dressing room as much as possible (let them know you're there) and the cumulative effects can mount up, leading to lethargic performances (not unlike the one United experienced last night).
Those who are questioning Mancini right now should think carefully about whether they are being hoodwinked by mischief from Neville and Ferguson. The only thing that matters is that the players ignore United and Ferguson as best they can (which is out of our hands) and the fans keep any grievances about Mancini and his tactics to ourselves for the remaining eight games (which is firmly in our hands).
The time for criticism (constructive or otherwise) is in the summer.