My legal analysis. Justin failed to do due diligence on the public blockchain code which contained restrictions on the ninjamine stake. He bought land on the moon and is now trying to convert it to land on Earth by illegal means.
Second, despite his statements of not knowing about the understandings regarding the stake, he IS bound by them. These understanding bound Steemit Inc which owned the stake. He bought the company and thus became bound by its pre-existing obligations.
More details here: https://steempeak.com/steem/@apshamilton/sun-s-folly-will-be-taught-in-future-blockchain-business-schools