2012 SUBARU OUTBACK Suspension Problems

Subframe is rusted out and causing control arm wobble which I cannot control the steering correctly

I WAS DRIVING ON A INTERSTATE HIGHWAY WHEN THE REAR OF THE CAR STARTED TO WANDER FROM RIGHT TO LEFT, IT ACTED LIKE IT WAS FLOATING ON THE HIGHWAY. I TOOK THE NEXT EXIT TO CHECK FOR A TIRE LOSING AIR PRESSURE OR LOOSE LUG NUTS. THEY WERE FINE. I SLOWED DOWN TO 50 -55 MPH FOR THE REST OF THE TRIP. EVERY BRIDGE AND OVERPASS I SLOWED DOWN TO 50 MPH AND YET THE REAR OF THE VEHICLE WOULD JUMP SIDE WAYS. THE HIGHWAY WAS WET FROM A RECENT SNOWFALL, APPARENTLY THERE WAS SOME ICE ON THE ROAD. OTHER CARS/TRUCKS WERE GOING AT 65 MPH+. . I HAVE NEVER FELT THAT "FLOATING" IN MY 45 YEARS OF DRIVING THRU SNOW AND ICE. *TR

WHEN DRIVING ON THE HIGHWAY THE VEHICLE EXHIBITS VERY POOR STRAIGHT LINE STABILITY. VEHICLE WANDERS WITHIN THE LANE AND REQUIRES EXCESSIVE STEERING WHEEL CORRECTION TO MAINTAIN STRAIGHT DIRECTION. VEHICLE 500 MILES ON IT (350 DRIVEN BY OWNER) BUT IS NOW SITTING IN DRIVEWAY FOR FEAR OF PERSONAL SAFETY IF EMERGENCY MANEUVER IS NECESSARY ON THE HIGHWAY. *TR

WHILE DRIVING THE CAR ON A MAJOR HIGHWAY THE CAR WAS OUT OF CONTROL. WE HAD ONLY 2 INCHES OF SNOW DURING THE DAY, THE HWY. WAS MOSTLY CLEAR EXCEPT FOR SOME PACKED SNOW BECAUSE OF COLD TEMPS. BUT IT WAS MOSTLY CLEAR. WE COULD NOT KEEP THE CAR GOING STRAIGHT, IT WAS CONSTANTLY SWERVING. WE COULD NOT GO MORE THAN 45 MPH. ALL THE OTHER TRAFFIC WAS GOING AT NORMAL SPEED. NOBODY WAS SWERVING OR SPINNING OUT. WE WERE DEFINITELY A SAFETY HAZARD ON THE HWY BECAUSE EVERYBODY HAD TO SLAM ON THE BRAKES BEHIND US AND THEN GO AROUND. WE HAD TO EXIT AT THE NEXT OFF RAMP. EVEN WHEN COASTING DOWN HILL THE CAR WAS SWERVING OUT OF CONTROL. I HAVE NEVER OPERATED A VEHICLE LIKE THIS BEFORE, WE ARE VERY LUCKY THAT NOBODY REAR-ENDED US OR THAT WE PUT THE CAR IN A DITCH. THIS IS...