That seems rather likely. They got in, pumped it, dumped it, wiped, and flushed. Now they're ready for another pump...if they feel like it. I think they probably will, when they feel like it, because crypto is so much easier to control, and produces such great returns, even on short term trades. I often can make 10% in a single day, or more. I've made around 20% in less than a few seconds before, thanks to being VERY quick with trades during a spike.