The right side shaft popped out from the diff doing about 30km/h around a corner.
The shop said this was caused when i "roughed up" the suspension in changing the control arm and bushing. (a job i did myself to correct rear inner tyre wear earlier that day) ...they popped it back in.

But, i was told the vibration and crunching noise which existed prior to that suspension refresh is coming from the diff.

Oil was changed just over two years ago with redline 75w90 and the unit was still full of it.

I'm going to pick it up tomorrow and store it home until I get the new diff shipped. I may open the old one up and i'll definitely be posting pics. ...not happy at all about this one