Rather it's Grigson or Ballard players the guys on the field the past couple of years have one thing in common. Pagano has been coaching them and they had a hard time putting teams away. That's a sign of a mentally weak team and it falls on the coach to make them mentally stronger. Rather it be Cardinals or Titans this year or the Browns and 49ers both teams they let back into the game they had beat or even the Lions game when they gave the defense the leader with under a minute to go or the Titans game in Tennessee when they let back in a game last year or the Texans game in Houston last year, or heck even their best win last season when they let the Packers come storming back in the 4th quarter. Pagano's teams the past couple of years have a track record of not finishing teams off. Can you argue some of that is the players? Sure but whose job is it to make them mentally strong enough to finish the game? The Head Coach. That's why I say it falls on him.
As to Clark , he IMO he just "flashed" last year. Looked good on some plays , held his own on a bunch more and always had a few where he was over powered or badly beaten. You just can't (again JMO) have 2-3 plays a game where you give a rusher a free run at your QB. It's one thing to get beat but he has those occasional plays where he is horribly beaten.