But 1) in the context of the article (which only knows about $4.7m being returned), this was only something they did after they failed to get away with the mone

But 1) in the context of the article (which only knows about $4.7m being returned), this was only something they did after they failed to get away with the money; and 2) if you were a "white hat" you would give back all of the money, not 40% of it ;P.