I find myself disagreeing with you most of the time, but you're right on the money with this one.
Considering that he has teammates who routinely get hurt, that there are guys coming off of broken bones, shredded knees, and that just about every damn player in the league is sore at this point - there's nothing about his quad that should keep him from coming back for this final stretch of games.
He is being a little , plain and simple, and I was a guy who was on his side right up until this past week.