One side's long positions are being liquidated, while the other side sells spot? What kind of operation is this?

"1011 Insider on opening shorts after the flash crash" 10 minutes ago deposited 3182 ETH to #Binance, valued at 8.036 million dollars, deposit price $2525.76, that is $ETH After a rapid decline, strangely, he still has ample funds on the chain but chose not to top up the margin.

Wallet address 0x4F83BEe69D205836024A1A0b5c9738854649C2a3