Asaki said:
When you think about it, the "wolfman" hand is wrong in more than one way.
It's his left arm that got severed, but that's a right hand, isn't it?
Nicely noticed! According to those behind-the-scenes shots, it's the left arm that got chopped, but in the movie we see a right ('Wolfman') hand attached.
Ah well, at least we didn't end up seeing any shots of the 'Walrus' guy's body with his left arm lopped off, or things would have ended up *really* confusing!