The bid wall has followed the ask wall within 5usd all the way from $515 down to $500 now.
The ask wall originally appeared fake, but about a third has sold and it's still there. You can watch the bid wall flee every time the price drops, and move up as it rises. A serious buyer would not do this.
It's possible the bid wall is there on order to entice buyers to eat the ask wall.
Regardless, the ask walls on bitfenix, okcoin, and bit stamp total about $2m USD, so even if all of it is eaten... That's a lot of the current buying power gone. Rocket seems unlikely.
Yeah, could be the same guy behind both the ask and bid wall. Guess we will know if the bid wall disappears after his coins have been bought.