I've never done the front drive train before, so I'm guessing based on what you've described. I think you're referring to a C-clip on the inside of the differential housing. If it's anything like the rear differential, there is a cross shaft going through the spider gears that has to be removed. Then the axle shafts can be pushed in, at which point you can remove the C clip, and pull the axle shafts out of the housing. Of course this means you have to first remove the cover plate on the housing.