LOL wish I were such a moron whale holding 5-digits worth of BTC that allow me to manipulate the price at my will 

Why do you think they do this? Because it's fun causing a flash crash? The whale who did that probably decided to cash out massive profits before it's too late, some people set exit-points at certain prices, it's called having an strategy in a highly volatile market, that whale probably had one at +8k, nothing moronic about that.