I don't know but I'm sure they were overthrown, underthrown, or simply not thrown too because of various other factors way more than they actually dropped the ball.
I feel Hartley and Dugans recruited the best on the staff and coached their positions well (Not special teams). And I would not have had a problem keeping those two because of that. However, I understand why Diaz fired them.
And I would reply you are high my friend. All of those positions had depth and scholarship distribution issues while Dugans was here coaching and some still do.
Nah he should've kept Dugans and Hartley they recruited and coached their positions the best on the entire staff.. It's not their fault that the play calling was tired and predictable on gameday