In my view the price fluctuation of SBD is normal now. I have even seen its price at $4 and these days it is running around $0.5. I dont think its a big issue because the peg ratio of SBD broke a long time ago and its still doing fine.
SBD is no longer a stablecoin for people rather it has become volatile just like STEEM. Maybe Justin Sun is aware of all this and is controlling it.
Anyway nothing can be said for sure about what will happen with STEEM. Even our #HIVE coin is currently struggling 😌