I've been selling SBD for Steem then trading it back and forth with BTC since I got here. I'm surprised it took this long for SBD to return to the peg. I can only guess that quite a few were HODLing, hoping for another spike. Unless it spikes again when BTC goes back up, that was likely a mistake.
Unfortunately, people might have learned that HODLing when it's $1 is a good idea. If so, we might have a problem.