This is already in our bug DB. I got countless PM's about this last year. The arms would get yoked too, but I think that got fixed for 09.
Pretty unacceptable that it has shipped for like 4 straight years.
You mentioned the arms getting "yoked", but in Madden '09, the players shoulder pads would sometimes get "yoked" and then fixed by having to go back and edit the player again. BUT, the fix, just made the shoulder pads look better, but they still were not quite right.