Actually, what he said was that more than half of the sacks weren't the offensive line's fault. He didn't say who's fault they were. I.e., how many were due to Allen holding the ball, the RBs not picking up blitzers, the WRs not making blitz adjustments, etc. It actually sounded to me that he thought the biggest issue was Allen not seeing the impending blitz in the defensive alignment and making the adjustments with the WRs as a result.