Well I thought the end clip woudl be the solution here but it seems after tearing everything off, the ring is still in place...  So what could be causing the halfshaft from staying put?

Above someone mentioned if the cv's are binding that could be a possibility.  Here is a picture of the halfshaft.  Are both the rubber boot parts cv's?  If so the one on the right moves "in and out" but the one on the left doesn't?  Are they both supposed to move "in and out" or just one?  Both seem to rotate and flex okay...

Any suggestions please:(

Thanks!

The inner one should move in and out, and round and round, easily.  I believe the outer one is supposed to stay in place (in and out wise), and just rotate freely round and round. 
Is your suspension dropping down too much and pulling the shaft out? 
Once you push the stub shaft into the differential, how hard is it to pull out?.....You should have to pry it out with something (like a screwdriver) it shouldn't just "fall" out or you shouldn't be able to just pull it out....the clip should be bigger diameter than the end of the axleshaft, and it will compress when you push the axle shaft into the carrier, then it will "spring" open to hold the axleshaft in.....if that makes sense.

I am able to pull on the shaft by hand with a light tug and it pops out.  I guess the ring is the correct size because it must have been the original?  I also ordered a new one from Hawk and tried it but had the same results.
Could it be I am not pushing the shaft far enough in?  I push with all i have and it feels like it is in place?
I am curious if the rings I have need to be even bigger?  They appear to barely be larger than the splines...  I attached some pics

I can't really tell from the pics.  If the ring fits down in the groove all the way around the shaft, then I would say it is too small.  The one I have, probably sticks out about an 1/8" on one side, when the other side of the ring is pushed down into the ring groove.  If I remember, I'll measure one of the rings and post up its diameter.  Was the new ring and the old ring the same diameter and stiffness, when you squeezed it?
IIRC, the space between the green part of the CV shaft and the diff. housing should be about 1/8" (just big enough to get a flat blade screwdriver in, to pop the shaft out).

Seems my rings are okay cause I get the same amount 1/8th when the ring is pushed in.  I am wondering if I should wrap something around the shaft in the grove like a piece of wire and  install the ring so it sticks out further?

No.  It sounds like your rings are ok.  How is the gap between the green part of the CV and the housing, when the axleshaft is pushed all the way in?
As I asked before, is it possible your suspension is drooping too far sometimes and pulling the axleshaft out?  It looked like in some of your pics, you are running something other than a stock setup.

It seems the gap is okay but I wil check again tomorrow.  I am running a Calmini 2" susp. lift.  I wouldn't think it would do that though?