Thanks - my brain sponge comes in useful sometimes ;)
They may possibly need to withdraw STEEM quickly for some reason. The most obvious one is as you say, that they want to sell Steemit inc's tokens for their own reasons. They may also need to save face with the exchanges and the world by ending and burying the fake 'hack' they raised an alarm about ("let's just move forward and not talk about the past" - aka deny reality).

Those two are enough imo.