RWY EXCURSION AFTER LOSS OF ACFT CTL.

Narrative

UPON NORMAL TOUCHDOWN ON RWY 28 AT SYR AFTER SHOOTING THE ILS RWY 28 CAT II; THE ACFT IMMEDIATELY BEGAN TO DRIFT TO THE L OF RWY CTRLINE. RUDDER AND BRAKING WERE USED TO STRAIGHTEN THE DRIFTING; BUT WERE OF LITTLE HELP. GOT ACFT STARTED BACK TO THE R; BUT WAS UNABLE TO STOP MOVEMENT TO THE R OF CTRLINE THIS TIME. THE ACFT CAME TO A STOP APPROX 4500 FT DOWN RWY 28 JUST W OF TXWY F WITH THE NOSE GEAR 10 FT OFF THE RWY EDGE POINTED APPROX 360 DEGS (N) OR 80 DEGS OFF OF RWY HDG. 26 PAX WERE ON BOARD WITH NO RPTED INJURIES. PAX WERE DEPLANED VIA FORWARD AIR STAIRS TO A BUS WHEN ATTEMPTS TO MOVE ACFT HAD FAILED BY GND CREW. I FEEL WHAT REALLY CAUSED THE PROB WAS THE ARPT AUTH NOT CLOSING THE ARPT. SNOW WAS FALLING AT 3 PLUS INCHES AN HR AND THE RWY WAS IN NEED OF PLOWING. SUPPLEMENTAL INFORMATION FROM ACN 260412: REVERSE THRUST WAS NOT USED AT ALL AND IN MY OPINION WOULD ONLY HAVE AGGRAVATED THE SIT. THE RWY DID HAVE SOME SNOW ON IT AND AIDED IN THE DECELERATION OF THE ACFT WITHOUT THE NEED FOR REVERSE THRUST.