Leary is the only one I would have kept and I have not seen the images of his knee which the Cowboys have seen.
I liked McClain but he never put together a complete season. Yes, he played 15 games last season but he really faded towards the end of the season. He was injured all other seasons.
Paea played reasonably well but I don't know how they missed the knee issue unless he injured it after they signed him.
Would Carroll have been cut if not for the concussion? He played well in game 1 and bad for a half in game 2 before the concussion.
Church was a liability in pass coverage. They played Jones on the TE a significant amount of the snaps with the other Safeties deep. Church is not the guy you want playing deep.