The OPs point was this the "pump" part (ie get people talking about Bitcoin again). If their theory is true (and I'm not saying I believe it is), then the dump part wouldn't be transferring to another wallet, it would be selling their remaining Bitcoin.

If this is a pump and dump scheme (and that's a big "if") then they would need an order of magnitude more than 27BTC (ie the amount they sent to this wallet) for this to work.