1999 Suzuki Grand Vitara brakes problems

I first reported this problem last year. Something was causing intermittent severe vibration at highway speeds. I was traveling down the highway going 60MPH at approx. 12:30am when this occured again and I attempted to pull over to the side of the highway when my foot was dislodged from the brake by vibration. The force being applied to the brake was transfered to the accelerator which resulted in a loss of control of the vehicle. I slammed into a solid rock ledge and received injuries to my back and neck.

Tl*the contact owns a 1999 suzuki grand vitara. The contact stated that the brakes made a grinding noise and the brake adjustment pin in the rear driver side wheel was loose. The spring that held the wheel in place failed, which allowed it to move freely inside the brake drum. The spring flipped up and caused the brake shoe, drum, and braking kit to fail. Prior to the failure, aamco inspected the rear and front brakes and stated that they were 50% worn.