Renault do a joint kit for them, theres a section near the axle that is straight where you cut them bang in the middle.
I got mine off, in one peice on the drive on axle stands, first time I'd ever taken one off to, tis easy tbh.
To drop the axle you undue 2 bolts.
JUst drop the rear beam. It's only two bolts that hold the shocks on. Undo those, and let the beam hang down enough to remove.
Explained this too him and he said he'll have a look he said if its not as simple as it sounds it could take hours...
Should I trust this man with my exhaust haha