I think the club may have lost the players a bit as well with their handling of the "chickengate" fiasco. Publicly humiliating the entire group over a silly prank and allowing the media to brand them in the worst possible way probably hasn't inspired the players to give their very best for the club.
This is a good point. As much as I subscribe to the 'A true competitor will try his guts out no matter how much he hates the coach' theory, that episode cannot have helped. Especially for the boys who had no direct part in the making of the film, to be hung out there to dry as if they had committed some callous crime against humanity -- it could well have been a little disillusioning and this could well be playing some part in what we are seeing.