*BERNANKE: US ECONOMY FACES FORMIDABLE HEADWINDS *BERNANKE SAYS MOST LIKELY OUTCOME IS `MODERATE' RECOVERY PACE *BERNANKE SAYS FOMC `STILL LOOKING AT EXTENDED PERIOD' *BERNANKE SAYS JOB MARKET REMAINS WEAK *BERNANKE: CREDIT REMAINS TIGHT FOR MANY BORROWERS Everyone back to shorting USD...