Okay, I guess it makes more sense to assume that his hand is on backwards and he walks around with his face covered up. His face being covered also explains why he is not facing the subject of the painting (Lazarus) like almost everyone else, but starring (if you can stare with your face covered) off in to nowhere.
The idea that there is some hidden message is a lot more exciting then just attributing these anomalies to poor artistry.
Enjoy your speculations.
pseudo