Was the cover 0 blitz on third and goal from the 10 with DBs playing 9 yards off. You HAVE to have at least the inside corners in press there. Playing off forces them to defend literally the entire route tree. WR just runs up to you and makes their cut 1 yard before they reach the DB and its easy money.
No way bobo is that open on an easy inside slant if Clark is in press coverage. If you are running an all out blitz you have to jam the WRs for as long as possible to give the defense time to get home, not give them an easy and obvious slant to the slot. Just awful play design, and an easy of a read and execution as it gets. On a huge play in the game.