I just gave you the logic. The first rule of getting playing time is "don't be a liability". The ILB ahead of him was Campbell, not Hicks, and he played well in the first half/plus of the season. Gardeck is a STer and a gimmick pass rusher, not a potential every-down player. Kennard and Fitts were backup OLB's whose snaps were dictated by the emergence of Reddick for the former and the loss Chandler Jones for the latter.