According to the Wall Street Journal, what unusual moves did Morgan Stanley make in Facebook's initial public offering (IPO)?

How could these moves have contributed to the "rocky ride" for Facebook's stock after its IPO?

Why is "pricing an IPO...as much art as science"? Some hedge-fund managers pulled out of the Facebook IPO when the size of the IPO was increased? Is increasing the size of an IPO always a sign that investors should pull out of the IPO? Explain

Before answering plase: Watch: Morgan Stanley Was Driver of Facebooks Wild IPO Ride http://live.wsj.com/video/morgan-stanley-was-driver-in-facebook-wild-ipo/9718457C-2F02-4E90-89C1-04FB0565312E.html#!9718457C-2F02-4E90-89C1-04FB0565312E

Read: Insights: Morgan Stanley Cut Facebook Estimates Just before IPO. http://www.reuters.com/article/2012/05/22/us-facebook-forecasts-idUSBRE84L06920120522

Read: Why did Facebooks shares fall after its IPO? http://finance.yahoo.com/news/why-did-facebook-shares-fall-225006922.html