Help - 91 100 CV joints won't come off

[Andreas Meyer <meyer@hpanix.an.hp.com>]

This is a 91 Audi 100. I just bought the car for my wife
a couple of weeks ago and I am already doing my first
work on it and I am stuck. It has bad outer CV joint
boots and I am replacing both. I have both axles out of
the car. Seems like that was the easy part. Now, how do
I get that darn outer CV joint off the axle? There is
this clip that I am unable to take out. This is what I
tried:
	1. Squeezed the two tips of the clip together to
	   try to seat it in groove and used rubber mallet
	   to remove CV joint - no luck.
	2. Used needle nose pliers to push the tips of the
	   clip apart as far as it will go. This is tough
	   and used a second pair of hands. Then I used
	   the mallet again. Still no luck. Seems like
	   this should do it. Is there some special tool
	   that's needed?
So, what's the trick. On my VW this was the easy part!

Thanks for any info,

Andreas Meyer