He wont come back. The whole point of the STK project was to keep burned CINNI holders quiet while the whole Cinni Crew made a fresh start with SDC. I would bet Cinnicoin is just one of their accounts, not an actual individual.

Cinni was always just a copy of Blackcoin. When the PoS coin hype was gone, the crew jumped on the next fad which were anoncoins. They took their apps with them like in-client messaging and so on. Remember that one? upon its release, they dumped Cinni to the ground and ran over to SDC.

This crap is also almost done with now and I would bet my ass they also have their exit Plans for SDC ready and willl make a new jump soon. Probably a Multifunction, Smartchain, Etherclone - something coin to profit from current trends.