This did not surprise me, Since the initial listing on the exchange the price movement looked suspicious, I guess the dev pumped the price.
IMO the dev is not pumping the price but the dev was dumping it. As far as i know, all of the tokens that already deployed by the team being sent to the crex24 and that's why the price dumped so hard from a few hundred satoshi to a few satoshi.
The dev was running away with all of the money. You can even track it if all of the supply goes to the crex24