Oh, the irony! Months before he was fired, in his talk [1] at QCon London 2017 (March 5-7), Josh Schwartz jokingly said: "I am going to tell some stories and hopefully I won't get fired for sharing this stuff but we'll see how it goes".
[1] How to Backdoor Invulnerable Code: https://youtu.be/EGshffkzZsY?t=680