Short selling serves a very important bullish function. It works like the ballast tanks in a submarine. The market slowly acquires short sellers like a sub takes on water, but when the sell side gets too crowded, the shorts get squeezed, just like a sub blows its ballast tanks, and up we go. Shorts enter the markets at different price points, however they leave through the same door when the squeeze is on.
I think it should be apparent since March of 2009, that the market can be made to do anything at all, which makes me question the intelligence of people who regularly short equities, knowing full well the Administration, the Treasury, the Fed, and the MSM will do and say anything to keep the party going. I short, but very judiciously in equities. It's dangerous to use too much market theory when discussing actual markets. The two differ widely at times. My personal observation is the market engages in price discovery until I enter a trade, then it plays it's little games and wrecks me, and then it returns to a normal auction market. LOL