A former Goldman Sachs managing director filed a blockbuster $50 million suit against his former employer, claiming two executives at the Wall Street powerhouse tried to cover up a botched deal with a shady banker in order to deceive regulators — and then fired him when he wouldn’t play along. Christopher Rollins, who was based in London, said Goldman undertook the cover-up, including ignoring anti-money laundering rules, so it could do business with a shady European financier. The unidentified financier has a “history of legal problems,” according to the 33-page suit filed in Manhattan federal court on Thursday. ... (full story)