Examining the 360k dump on the Kraken chart.  

220k dumped at 2016-12-26 13:05:00 @ median price 0.0003435 = 75.57 BTC

140k dumped in chunks starting around 2016-12-27 10:00:00 @ 0.00032 = 44.8 BTC

So he dumped his 360k for about 120 BTC = average price 0.000334

I suspect he made about a 55k ICN profit if he was able to buy back in around 0.00029.  I didn't see any obvious signs of him buying back in on chart of orderbook, so if he did, it was in 10k-50k chunks.

Price drop was due to this one trader, there's no other significant volume spikes on the chart.

Conclusion: ICN holders still holding strong.  RIP to the noobs if they panic sold.  RIP to the whale if he hasn't bought back in, he will look like crying Jordan soon.