CAR LOST POWER STEERING AS I WAS TURNING, PULLED HARD RIGHT, CAUSING CAR TO HIT A SMALL TREE. MINOR DAMAGE; CRACKED HEADLIGHT LENS AND FRONT NOSE PIECE DETACHED FROM FENDERS. THE CAR WAS RESTARTED AND THE STEERING APPEARED TO BE FINE. HOWEVER, SINCE THIS HAPPENED, THE STEERING APPEARS TO BE HARDER TO CONTROL AND THE CAR HAS A HARD PULL WHEN ACCELERATING SIMILAR TO TORQUE STEERING. THE CAR NEVER HAD A PROBLEM WITH TORQUE STEERING PRIOR TO THIS INCIDENT. THE CAR ALSO DEVELOPED A SWAY WHEN HITTING THE SMALLEST ROAD BUMPS, SUCH AS COMING OFF A BRIDGE.