I don't believe it for a second that these clowns were related to the sharp fall, but I don't mind people thinking they were. If you look at how much hate is going towards Roger and Craig right now, it's very amusing. They basically made sure their shitcoin became worth even less + people really hate them now. You got to love how they shot themselves in the foot. 

People's shock mainly came from seeing the $5800 level get broken through. It could have been manipulation in an attempt to trigger stop loss orders that were stacked below that level, or it was a whale legit looking to dump thousands of coins at once without thinking about the consequences. Both options are plausible.