That's quite intriguing me so far (Dump or Staking) will the two scenarios is not far to happen, just take note that crypto liquidity is high during holidays, its december people is needing funds for the season, that's why 500K XTZ might be destined for liquidity or maybe i'm wrong.
But i believe if the owner will be dumping the token and look at the history of the transaction on that address
he was dumping it several times. And what already sent to the binance will be dumped by the whales.