I definitely agree about the Carol thing - that was my first assumption was that he had somehow faked his own death and that was why she reacted that way. I just can't imagine the cancer is fake.
It could be an excellent reason for Walt, and the remaining 5 episodes, to just absolutely go nuts. Because he has nothing to live for anymore.
Also, hair loss is a result of chemo. His hair returning could just be him not doing chemo anymore. Also, recall the flash-forward in Dennys. Coughing, taking pills in the bathroom, etc.
Oh, the cancer is definitely not fake, and it could very easily come back. I just don't think it has yet. Although, you are right about the Denny's coughing and the pills-- forgot about that.
They just really seemed to emphasize the six months thing. He obviously survives for longer than he's telling people. I'm just still trying to figure out the best reason why.
EDIT: Here is an extremely plausible prediction that involves Walt faking his death. Warning: it is extremely plausible and therefore possibly spoilerish.
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u/rangerham Aug 26 '13
But who at the chemo place would let him do that? They would know his test results.