The guys on the longhorn blitz have described it as Sark being a great play designer but has lacked overall game feel. I think its a pretty good description of the problem.There was too many long pass playes on first down that was incomplete. Due to poor passes ora broke hand. How long does it take for one to see this is not working, and is putting team in a hole for second down.
Play calling is also knowing what is working and what isnot.