For the record, the overnight low on Bitfinex was 2107 (they have probably the thinnest order book), on Bitstamp 2233, so prediction has already been fullfilled....
TA works with crashes too. I think I based the call on the daily MA, but I forgot which broker's chart I was using. Once we have a big crash, and it bounces the price tends to revisit the crash's low or below. On Bitfinex price bounced from the daily MA (2300) perfectly eventually reaching mid-2700ish where the daily MA acted as resistance, and I figured we will revisit that price and possibly below...
Here check it out:
https://bitcoinwisdom.com/markets/bitfinex/btcusd
Actually if you check the price around the late May crash, on May 26th price also bounced from the daily MA. So when we have to pick one broker to use its chart for TA, Bitfinex looks like a good candidate...
If you switch to the 6 hours timeframe, you can see the price topping just under the MA unable to break it through, that was the time to short it, about 6-7 candles ago...