If it was acceptable to act on instinct there would be 11 defenders all running to the QB at the snap every play. The reason coaches coach and players practice is to learn the responsibility and discipline to make the correct decision when they see it during a game. It was 4th down. Batting the ball down was the only correct play. Like i said, even if he does intercept it it's still a bad play that costs the team 20 yards of field position. If you don't want to blame Lewis then you can blame the coaches, but it's such an obvious play that a DB would have learned in little loop to high school to college that's it's possible pro coaches aren't even taking the time to teach it.