Justin Sun does probably not have anywhere near enough SP to take control of the chain. Steemit, Inc has around 70 million or so. 200 million is powered up. That's a third. Current Dolphins and Orcas have more combined!

There is no reason to roll over and play dead! Get everybody voting! Vote for pro-Steem witnesses with everything you've got. Do not forget any of your alts! Use up all of your witness votes!