Much respect to you for doing this without even jacking up the W123! I'm a skinny guy, and it was still too tight under there for me to replaced my flex discs without jacking up the car on stands.
MJM’s Workshop after unbolting them I found there was a way to collapse the shaft but didn't have the tool. Being at the junkyard I ended up cutting the driveshaft as most the car was dismantled.