Of course. Just ask Baltimore and Buffalo about that - they both went for it on 4th and goal from the 1 and didn't make it, and they're both paying for it. Cromartie is getting beat on just about every play. I'd love to know how that is anyone's fault but Cromartie's.
If I was the Steelers, I would just throw deep a bunch, Cro can't stop Brown or Sanders, and he gets PI quite a lot deep.