I think the reason we've seen less Turner is because of Turner. I believe it was his first play he was into the game he totally whiffs on a block and our runner gets blown up. This is why we've seen little of him the past few weeks. You can possess all the athletic ability in the World, but if you don't do your job then ride the pine.
But the simple answer to that is, "Hey Offensive Coordinator, don't expect your 6'1", 175lb wide receiver to block."
I saw Jamal again last night. If he's 6'1" then I'm 6'7". He probably weighs about a buck-eighty, and that's generous. The guy simply isn't a blocker. He's not built for it, he's not good at it, and putting him in situations where you need him to make a critical block on a run is stupid, especially when you have Brandon Kinnie and Quincy Enunwa on your roster.
Turner has game-changing speed and moves, but we seem unwilling or incapable of putting him in situations where he can affect the game. That is a failure on Beck's part, not Turner's.
You didn't recruit Jamal Turner to level DBs on Option plays. You recruited him so that, when you get him the ball in space, he runs and runs and runs. So frickin' DO THAT, Beck.