PS.
Trailing arm is off.
Damper is off.
Hub, disc, caliper & backplate are off.
Lower & upper arms are only held on by their respective subframe bolts (which are also rusted to blazes).
https://rimmerbros.com/Item--i-GRID001546
Rollbar link to upper arm bolt #7 is out.
Nut #6 is off.
Bracket #3 is causing the problem