I drove down the street and the brakes were dragging the entire time like i was smashing the pedal to the floor. When i got to the store brakes were smoking and when i tried to leave i couldnt move fwd or backward. They are locked on, so what can i do in a store parking lot w/ a slammed car to relieve the pressure on the pistons? Its a 93 teg w/ No ABS. Is the problem more serious like the master cyln. or booster failure? Need to go to work tomorrow please help quick as u can.