So someone sells 100k BTC with no price impact, then causes the whole kerfuffle with UST to impact the price of BTC, which slips 30% in the face of the UST peop

So someone sells 100k BTC with no price impact, then causes the whole kerfuffle with UST to impact the price of BTC, which slips 30% in the face of the UST people selling like 10k BTC, then manages to buy 100k BTC to cover, again with no trace or price impact? Seems … unlikely