First of all, that guy isn't the co-founder of Bitcoin. He's the co-founder of Bitcoin.com, which Roger Ver controls. They're known Bitcoin Cash shills. This means absolutely nothing for the true Bitcoin. Let them dump. We're better off without them.
This has happened a month before. I'm not saying it will, but it's likely Bitcoin Cash will crash spectacularly again. Maybe then Bitcoin Cash supporters can finally open their eyes to the reality that they're being used to make money.