doesn't look like it was 50K dumped.. all smaller trades, was just such a big bid-ask spread that when someone hit the low bid it dropped.
here's the trade data:
TRADE DATA
DATE TIMESTAMP PRICE VOLUME TICK DIRECTION CHANGE
05/10/2018 12:58:39 1.395 100 -0.10
05/10/2018 12:23:09 1.49 150 0.38
05/10/2018 12:22:58 1.11 6,750 -0.05
05/10/2018 12:22:53 1.16 1,050 -0.01
05/10/2018 12:22:51 1.17 1,000 -0.01
05/10/2018 12:22:51 1.18 1,000 -0.01
05/10/2018 12:22:51 1.19 100 0.00
05/10/2018 12:22:46 1.19 1,000 -0.11
05/10/2018 12:22:46 1.30 5,000 -0.02
05/10/2018 12:22:28 1.32 1,260