Impreza CV axle

I have a 5 speed '98 Impreza with the small 4 cyl engine. It has
2 split CV boots. Both inner next to the transaxle. I have the
passenger side out to the point of popping it out of the axle and
there is where I am having problems. It doesn't pop out like a
conventional axle where they can be pried free between the axle
and the transmission. How do I get this thing out? I've pulled
and tugged on it until I pinched my fingers but it won't come free.
My book says there may be a pin in there but I can't see one. So
I am asking for a little help. What's the best way to get it out
of there because I have to do the drivers side also.

Thanks