Generally no problem un bolting the rear suspension. I replaced the rear struts a couple of years ago along with the bushings and all the bolts came out with no problems. My Thema had covered over a hundred thousand miles at that stage . Put a bit of WD 40 on the bolts a while before you start just to help them along, if they are stiff give them a couple of turns and then spray again, tighten then up and start un-winding again, this will held the WD to work it's way in . You should have no problem
. Thanks David.