Just for your information...
The C clip is what prevents the axle from coming out of the differential. They are removed by removing the carrier pin retaining bolt, carrier pin, and then sliding the axle IN towards the center of the car. Usually you must also remove the rear ABS sensor out near the end of the axle as it prevents the axle from being pushed in far enough to get the C clip in or out. BE CAREFUL with these as 80% of the time people break them trying to get them out as they tend to gaul up. They are held in place with a little hex head (if I remember correctly) bolt. You will also have to remove the bracket caliper and disc. Once the brake caliper, brake disc, ABS sensor, carrier retaining bolt, and carrier pin are removed the axle can be pushed in towards the center of the car and using a magnet the C clip can be removed. Once its removed the axle can then be pulled from the car. The rear disc brakes are all that saved you from a what could have been a catstrophic failure where the wheel/tire/axle assembly as a whole exited the car at speed. Its not a pretty site!