So, if they weren't tissue-paper thin at linebacker, you might see Carroll (6-1, 205) in Fletcher's spot, but since they aren't willing to put first-round rookie linebacker Marcus Smith on the field - he again was active but did not play Sunday - they are stuck with what they have. It took Carroll, an intelligent player, quite a while to learn the hybrid dime role; if they move him out of it now, they have no one to plug in.