Quietlion:
There is no doubt in my mind that Juancho is not Oz.
Juancho is obviously a very articulate and well read person, and Oz could not make that up. Juancho is far more abrasive than Oz, but it comes from a different place. In addition, the Kafka reference (very funny I thought) clearly is not from Oz's world.

"Just look at this, it's dead; it's lying here dead and done for!"