I just do not believe he has it in him to suddenly turn it around. His entire philosophy plays into our problems and if he reversed his philosophy what would he have left? Of course, he never would, so it's a pointless question. Those forum posts from Wigan fans yonks ago show that nothing has changed in the mind of Roberto Martinez, and we'd be foolish to think that it ever will.
He, quite simply, has always been an unbalanced tactician. On our day, when things do go well, you can see the brilliance shine through and all the things he does right. And he does plenty right. If he didn't he'd have been long gone; the only reason there's a debate is because we can all see the good things he's done.
But football is about results. If your philosophy leaves you below teams whose only mantra is "40 points", then it's a worthless one. At this point I don't believe another 6 months, 12 months, 24 months etc would do anything. I don't believe in his vision anymore and I think most of the fanbase are falling into that camp. The more that do, the worse the atmosphere around the club gets and the harder it gets for him to turn it around.