My post stated the reason he isn't starting or being involved in games. If he was playing like Messi in his last few games he'd be the first name on the team sheet. If he was playing very well, he'd still be involved. He hasn't been great and his last few games were poor, as a result it seems Fergie has given up on him having any more contribution to the squad.
The game against Blackburn (in my opinion) was the first game that he wasn't great, despite his goals. This was the first of a 4 game spell where I think he was mediocre-poor, despite goals/assists. This is why I picked those out, as a reason why Fergie has decided he isn't going to be involved at all.
Only a fool would, without any evidence at all, think Fergie is now cutting off his nose to spite his face. It seems Fergie, like me, believes that Welbeck/Hernandez even in average form offer more to the team as a whole and we have a greater chance at winning the league with them rather than Berbatov.
Unless something colossal has happened behind the scenes, and there is certainly no evidence of that.