I don't know about your theory about the $85,000 sold off. You bought some of my Steem most likely. I have your optimism as well, just not as much money to invest. I'm looking to buy back in too, I just think it has a ways down to go first. I feel that this sell off is a lot of earnings from users trying to cash out, but time will tell. Either way I feel strongly it will turn around, just not sure where I'll be buying back in yet.
RE: Trading steem on bittrex.com, buying the dips and covering the market