Just read Teller's prospect bio on NFL.com. Quote from anonymous ACC Analyst is very surprising. I didn't feel that Teller "checked out".

"He was one of my favorite offensive linemen in the entire conference entering the season and he just got worse as the season went on. He's not the same player he was last year. I don't know if he had a falling out with the coaching staff or what, but he looked like he checked out. I know he's a much better player than he showed this year." - ACC Analyst