You still can steer whether you tires are locked up or not. Steering doesn't do any good if tires are locked because all they are doing is sliding, but you can turn the wheel left to right. Like is said be for all the abs does is allow the brakes to back off to allow the wheel and tire to spin and not slide on road. It is no different than when on Ice you lock the wheels up and you just slide but when you release the brake the wheels began spinning again allowing for traction. ABS only controls the brakes.