I wouldn’t bet on that, because the force of the attack he and his partners invested during 2017 required large financial resources, and they could only get that if they sold their BTC to pump their new shitcoin. At one point they even came dangerously close to equalizing the price of BTC and BCH, and I believe they played their strongest cards then because they were confident they would succeed.
In the end, they only proved that there is only one Bitcoin - and the paradox of the whole situation is that they financed the whole venture.
It was a pump and dump, however. They might have used their bitcoin to pump and sold on the community and take their bitcoins back and the community's bitcoins hehehe.