Self buy your ICO to inflate the total sum = free waves => Sell at any price and you still make a profit
thats the beauty of the self bought ICOs
not sure how they got millions of dollars to self buy?
Several ways to do that such as borrowing few k btc at 10%/month or at some ridiculous rate and paying it back after dumping the free waves on their slack and forum followers. My theory is that other whales from within NXT/SUPERNET/BTCD were behind it.