When Locke chided Ben for having a fridge with chicken in it (that John didn't hesitate to chow down we remember) was it really Locke talking? Sometimes I wonder if Jacob has been talking through Locke, especially to Ben. Ben told Locke that Jacob didn't like technology. And we know that Locke did not really have a problem with using technology to his advantage all along his Lost story, up until the conversation in Ben's kitchen. So at the moment that he said that it struck me as a very odd thing for Locke to say. Odd even for inconsistent Locke. But it doesn't seem an odd thing for Jacob to say to Ben at this point. Ben has been living a life of dictatorial ease since the DI purge. Has he not been obeying everything that Jacob has ordered him to do and that's why Ben can tell people that Jacob's not a forgiving man? Ben might know first hand of Jacob's anger, if he's been slowly casting off his own puppet strings, to disobey Jacob on occasion. So a thought has been nagging me since, that Jacob is using Locke like his brand new ventriloquist dummy making him do and say things to put Ben (his old dummy) in his place, as well as to protect the island.
We know that Locke is very pliable, his Otherville dossier apparently even stated as much. So was it Jacob who mentally convinced Locke to not push the Swan button, after leading him to the Pearl to make him lose his faith (as fans have posed on their blogs as well)? Could it have been Jacob throwing the knife when John killed Naomi? He could not even kill the father that he hated all his life, to buy his ticket into the Tribe of Jacob which he wanted more than anything. How could John have so easily thwacked Naomi in the back like that with no hesitation?
If this is true, I think that Locke will finally have the breakdown that he has been verging on for years, at the moment that Ben says to him, "Do you really think that you're so special to this island? Do you think that Jacob healed you because he liked you? He was using you like everyone else in your life John, and you didn't even know it! You're nothing more than a puppet to him! (pan in for close-up of Ben's most evil sneering smirk ever) Ha-ha-ha!" Then switch camera view to Locke's quivering lower lip and tears streaming down his face. If Jacob is actually using and speaking through Locke sometimes, I wish that TPTB would make it easier for us to see, maybe like when the devil talked through Linda Blair in the Exorcist.