I think you're probably right about that. He's a bit freaked out.
I'm always amazed at Shaun White. He had some sort of.. heart defect when he was a baby... and had major heart surgery?
When I was a kid, I remember one my neighbors dying from the same thing Shaun White has. I just can't remember what it's called right now.
But Shaun White isn't fazed in the least... I guess he never remembers having any problems.
Mardy though.. considering his surgery was just last year... or not that long ago relatively speaking, I would think he's very sensitive to how he feels...
I think it's hard for somebody to like Justin to relate to that fear...
Maybe Mardy came back too soon?