I would probably rule out drugs, because the aim of the drugging would be to calm him down and make him sleepy. Not get him amped up and disturbed like how he was acting. Also Prado has said he was acting normaly in the post parade when he was clearly not. When I saw him doing that I knew he wasn't acting normaly. Which is why I would tend to believe that if Barbaro did have something wrong with his ankle Matz was aware of it, but thought he could run on it. This is all speculation of course.
