Expecting continued shorting to the mean price.
After a price move like this the price is now governed by uncertainty more than anything, and I expect a retest to a price appropriate for further move decision making, and trend coordination.
Best of luck,
I experienced the same thing with USDCHF after the singularity event where it dropped 4000 pips down in minutes.
Missed out on the rally though, but I had bullish signals to go long...was a big regret.
After that, I noticed that all my technical setups were working specially well. Now that you mention it, it was most likely due to emotional trading.
Although it's painful at the time to see a big move you could have been participating in, it's probably more sustainable in the long term to pick the moves you feel right with, trades that don't involve that feeling of suspense with, as trades made in suspense are easily critically reviewed in hindsight (This is where the emotional blur could take place and impair judgement)
This is just my opinion anyway, you guys may be different :-)