To be honest, people that aren't going to be convinced that an in-depth video interview John Pilger asserts was made on October 30th or an abundance of statements from all parties about two days worth of formal interviews over the court case that's dogged him for a while aren't going to be convinced by a quick video of him saying "I aten't dead yet", or probably even a keysigned message.

There are an abundance of pretty straightforward hypotheses consistent with the known facts(e.g. "Assange isn't feeling fine because he's still angry and/or paranoid about his preferred internet connection being taken away", "Assange feels this story is good publicity, relative to other kinds of publicity he's getting at the moment") but of course these aren't the ones being discussed on "Where is Assange?" subreddits.