Is Big Ben's injury the reason why the Steelers are in a slump

i told my neighbor 3 weeks after his accident that big ben would have problems this year with it. i wont say its all from his accident but there is alot to it, i told him he will get a cuncussion and im sure this wont be his last, he might get another one this year maybe next but its coming. when the human head eats a car like his did without a helmet; the brain takes a beating against the skull, its very unfortunate but its also stupidity not wearing a helmet.