crypto flash crash in margin trading

[bloodchow]

last year in bitfinex.... https://twitter.com/biop3rl/status/935979872987631616

https://cdn.pbrd.co/images/HxAoLCw.png

recently in poloniex dash margin trading - https://poloniex.com/marginTrading#btc_dash

https://cdn.pbrd.co/images/HvuF7fL.png

my dash long position was closed manually just 3 hours before the flash crash (-22% in 10min), otherwise my 50% capital will be wiped out

so is this technical bug or manipulation?

or start putting very low buy order and start snatching flash crashed coins at low price