So F2Pool sold coins crashing the price in order for their investor to buy coins at a cheaper price and not for one moment they have thought of actually selling the coins directly to him and avoid losing money on both the coins sold at junk price and the revenue in mining.
Do you know why those guys have billions to invest? Because they don't do stupid schemes like this.
Why did they decide to massively dump their coins all at once? You are saying that that is a stupid reason, but you fail to go on to say what is the smart reason? please enlighten us?
It's well documented F2Pool is dumping their coins to drive the price down.