When you see 4 MM on the ASK and say 3 or 4 on the BID and they all fall off on just two or three trades..All during the fall thru 04 there were 3 to 5 MM on the BID but the PPS blew thru 04 in what 6 or 7 trades.. and those trades are at 10,000 or fewer shares..thats when you know its being controlled by one MM two at the most..the others simply pull back and let them control it...it will happen when someone puts in a Market order...that someone thinks they will get top price for their shares..most likely a new person..they dont realize that a Market order can be pushed down and down before being completed.
Now it appears the order is completed for the time being and its going back up on just one or two buys...