Hi,
If I understand it right, the rear part is either in or part way out, and the front half is not in line with the rear half. THis can damage the slide out, so I would bring the front in line with the rear half as soon as possible. This will help revent the slide from bending.
THen I would check the fuses or perhaps there is a circuit breaker that controls the motors. Fix that next, so both motors will run at the same time.
If the slide is out, and you need to move the RV, then there should be a manual crank that you can use to override the motor.
Fred.