A320 CAPT REPORTS FLAP OVERSPEED DURING WIND SHEAR EVENT AND GAR AT DEN.

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ON A VISUAL APCH TO RWY 35R IN DENVER WE HAD TO PERFORM A GAR AT APPROX 6500 FT MSL DUE TO WINDSHEAR. THE ARPT WAS RPTING MICROBURST CONDITIONS WITH RAPIDLY CHANGING WIND SPD AND DIRECTIONS ON ALL RWYS. WE EXPERIENCED AN INCREASE IN AIRSPD OF APPROX 45 KTS WITH THE AUTOPLT ON AND IN CONFIGN FLAPS 3 DEGS. WE HAD BRIEFED FOR A WINDSHEAR AND DECIDED TO MAINTAIN FLAP/SLAT AND LNDG GEAR CONFIGN AS PER FOM. WHEN WE EXECUTED THE GAR DENVER TWR INSTRUCTED US TO CLB AND MAINTAIN 7000 FT TURN R TO THE HDG OF 095 DEGS WHEN WE WERE AT APPROX 6800 FT MSL. WE WERE IN THE PROCESS OF TRYING TO LEVEL AT 7000 FT MSL; MAINTAIN TOGA THRUST FOR THE WINDSHEAR; AND KEEP THE CURRENT CONFIGN AS WE HAD BRIEFED. WE NEVER SAW A DROP IN PERFORMANCE WHICH NORMALLY IS ASSOCIATED WITH A WINDSHEAR. THIS ADDED TO RAPID INCREASE IN AIRSPD AND THE OVERSPEED OF THE FLAPS. OUR TIME IN THE OVERSPEED CONDITION WAS LESS THAN 5 SECONDS AND WE DID NOT EXCEED VFE +10. THE DIFFICULTY WAS TRYING TO COMPLY TO ATC INSTRUCTIONS WHILE ADHERING TO WINDSHEAR OPS. THE PROB I SEE IS WHAT IS THE PROPER PROC WHEN TRYING TO COMPLY WITH AN ATC ISSUED ALT DURING A GAR WHILE TRYING TO ADHERE TO FOM WINDSHEAR PROCS. OVER-SPEEDING OF THE FLAPS.