Can you drive without the automatic self.

No. The shoes will not be held out to the drums and will have to move way too far to apply the brakes. That means the brake pedal will go too far. The pistons will pop out of the wheel cylinders. Even if they can be reassembled, brake fluid will contaminate the friction surfaces. Pressing the pedal more than half way to the floor can damage an older master cylinder. It will also result in greatly reduced braking power to the front brakes. That can land you in court when the other guy caused a crash by running the red light. An insurance investigator and shrewd lawyer will convince a jury you were partly at fault because you were less able to avoid the crash.