It was pick your poison, blitz & get torched or don't & die slow. They tried to situationally blitz to make a play. It worked to get a sack & pick 6. Good players make good coaches (see Texans front 4). McD is doing the best w/ what he has.
Right after he got checked he stood there while his guy went around him & sacked Josh & he just stood there. He got blasted on here for lack of effort. But it turned out he was concussed. His play was clearly affected.