PLEASE educate yourself a bit about the world of finance. Romney's name is on the SEC documents because he still owned all the stock of the company even though he had no active role in the firm. The financial transaction whereby he sold Bain to the directors took about 2 years. Look, government agencies including the SEC looked at this at the time of the filings...no problems then and no problems now.
Even two OBama fundraisers, Bain directors during the 1999-2003 time period have publicly stated that Romney had NO involvement with the company.
The Obama campaign is LYING.