Fed deliberates whether recent data is an "anomaly" or an inflation warning

By Howard Schneider and Ann Saphir. WASHINGTON, Mar 2- U.S. Federal Reserve leaders made comments on Thursday on whether recent data showing higher-than-expected inflation, employment and spending were an "anomaly" or a sign that even higher interest rates may be needed to curb rising prices. "Last month we received a flurry of data that have challenged my view…