Exactly, and there are plenty of bargain hunters with lowball bids. Market Makers especially. Sometimes, the MM's put up multiple bids at different price levels in a coordinated effort to ratchet the price down. It's easy for them to do that with weak buying pressure. They'll entice a seller to drop the ask price down to the lower bid price by quickly removing the higher one as soon as they see your ask posted.

You'll know it's there if your watching level 2 trading activity because you can see all of the bids and asks, otherwise you'll only see the walls they've put up and you'll see the bid you wanted suddenly disappear without even one of your shares being sold at the higher price. Like I said before, once the buying pressure becomes strong enough that buyers are steadily hitting the asking prices, they'll burn through the MM's shares and run it up hard. Right now it's just flippin, flippin, and more flippin.