THE L WING GND SPOILER ON AN MDT CAME OUT IN TURB. IT BROKE FREE AND RETRACTED WHEN THE ACFT SPED UP IN DSCNT.

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DURING CLB TO CRUISE ALT; AT 8000 MSL; THIS ACFT ENCOUNTERED LIGHT TURB AND THE AUTOPLT IMMEDIATELY MADE AN INPUT TO COUNTER. THE GND SPOILER DEPLOYED LIGHT ILLUMINATED AND THE CTL WHEEL WAS POSITIONED AT APPROX 50 DEGS L WING DOWN AND THE 'BALL' DISPLACED TO THE L. I DISENGAGED THE AUTOPLT AND KEPT THE CTL WHEEL AT 50 DEGS L WING DOWN AND CONSIDERABLE L RUDDER. THE IAS LOST ABOUT 25 KIAS AND WE MAINTAINED 125 KIAS AND 500 FPM CLB. I MAINTAINED 125 KIAS AND 300-500 FPM TO 17000 FT MSL. UPON REACHING 17000 MSL; CLB PWR WAS MAINTAINED AND CRUISE SPD WAS APPROX 155 KIAS. THE ACFT HANDLING WAS NORMAL EXCEPT FOR THE 50 DEG CTL WHEEL INPUT; THE STRONG L RUDDER TRIM; AND THE APPROX 30-40 KIAS TOO LOW AIRSPD. I DID NOT ENGAGE THE AUTOPLT FOR THE REMAINDER OF THE FLT. WHEN GIVEN A DSCNT BY ZDC; I BEGAN TO INCREASE AIRSPD IN 10 KIAS INCREMENTS AND THE ACFT HANDLED WELL. AT APPROX 232 KIAS; THE ACFT SUDDENLY JUMPED TO A L WING LOW; OUT OF TRIM CONDITION; THE GND SPOILER LIGHT WENT OUT AND AIRSPD STARTED TO INCREASE MORE RAPIDLY. THE ACFT NOW FLEW NORMALLY AND AN UNEVENTFUL LNDG WAS MADE AT BWI. MAINT LATER RPTED THAT THE SPOILER BRACKET BROKE AT 230 KIAS AND THE SPOILER RETRACTED ITSELF. RECOMMEND SOME METHOD OF RETRACTING SUCH SPOILER DEPLOYMENT IN FLT.