thirteen28 with a suspicious mind:
I'm not going to make any excuses for Foles, who has been terrible, but I suspect the bolded portion above has something to do with coaching and Fisher's MO. In short, while I can understand the emphasis to limit turnovers, the coaching staff seems to be taking it to an extreme.
If you remember when Sam was here, he caught a lot of flak for throwing so many checkdowns, but I suspected at the time that it was Fisher's emphasis on avoiding turnovers that was behind it. Instead of pushing the ball downfield for the possibility of a big play, throw the safe pass, throw it where only the receiver can catch it, etc. That was Sam's game most of the time he was here.
I think now we are seeing the emphasis on limiting turnovers manifest itself with Foles, although in a different way, as you wrote above.
It's really a lousy way to coach QB's, because it puts such an extreme emphasis on avoiding turnovers that they have little room to think about actually making a play. Not surprisingly in that situation, they don't.