Did you notice any play in the steering wheel prior to cv joint going out? I noticed that while driving at 10-15MPH that when I held the steering wheel with one finger, the steering wheel would dance back and forth. It then began pulling right, so I checked the right front for a flat tire. It was fine. Then it began pulling left, so I stopped and checked the left front tire. It too was fine. I drove it another 1/2 mile before pulling it out of 4WD and noticed that the front axle was not engaging.