Here is something else to consider. Before you declare that you have a bad axle bearing , check and be sure that the 36mm axle nut is tight. Have you had the rear hubs off lately ? A loose hub will raise hell if its loose much less stripping the splines out leaving you stranded. You can jack the car up and try to shake the wheel. If its loose check and see if the whole axle and wheel is loose or the just the hub is loose on the axle. If its just loose on the axle, go ahead and take the hub/wheel off and inspect the splines in the hub.
Proper torque on the 36mm nut is 217 ft pd and some more.
Let me know what you find.