It happened so many times in 2018, the worst of which was the insane selling of fake Satoshi (CW) to pump his pathetic shitcoin. I really don't understand these people. If I was an early adopter/investor/miner with thousands of bitcoins, I would never sell for 80% less from the last ATH!
It is simple. He is taken hostage by somebody else. He has to do what he is told.