Just watched the Dropout. It's funny that Murdoch was a major investor in Theranos, the WSJ exposed their fraud, and a subsidiary of 20th century Fox produces a TV show about the whole thing.
He told them to pound sand and said he had every faith in the Journal's internal processes to not publish anything they couldn't prove.
Really increases the WSJ's credibility in my mind.
Isn't act of integrity, just common sense.
He likely knew by this point (or even way before) that it was inevitably going to come out at some point.