He has had this problem since before Stuart.
But even if it was a Stuart thing, he's a paid professional, if he's not putting his body on the line because he doesnt care for his coach, that says A LOT about the qualities of the guy.
He is a professional player, being paid good money to play footy, part of that is going out their and doing his job. If i don't like my boss, i can't just stop putting in at work, it's call professionalism, and if that's what he's doing (and it's not btw, this isnt a Stuart problem, this is a Milford is small and is scared of getting hurt problem), then it's a really bad charactor trait.