Stop once the car lands onto it’s side. Do not let the casualty complete the arc. If it completes the arc the rigging is all underneath the casualty, which could be trapped up in the suspension components of the vehicle.
Break down the rigging. You can attach the small chain to a control arm or frame horn on the high side of the car as it’s sitting on it’s side.
Engage the winch to bring the casualty down to sit in front of your wrecker or carrier.