Brief history:
Dan Larimer first created Bitshares. (And was the first to publicly talk of the concept of a blockchain-based "Decentralized Autonomous Corporation" - which later got picked up by mainstream as the DAO - Decentralized Autonomous Organization.)
Then, he left Bitshares and went onto create Steemit.
Then, he left Steemit and went onto create EOS.
He never did go back to Bitshares, but left it to the community to continue. Same - so far - with Steemit. Thus, it "could be pretty surprising" if he were to come back to work on Steem - in particular, because there was apparently some differences between him and Ned, Steemit's CEO.
No further analysis required, or no further story to report. Just have to wait and see what happens...