Move the display back parallel with the camera back, but away as far as possible. Support the back of the display so it doesn't fall apart before you're ready.

The goal with this step is to separate the adhesive holding the cable to the display to allow it to fold up towards the viewfinder. While it's still adhered, it will want to fold down slightly towards the bottom of the camera body.

Slightly separate the display assembly from the frame by pulling straight back. Do not force movement if tension is felt from the cable.

Once you have around 1cm of clearance between the display and frame, use 90%+ isopropyl alcohol and a thin, nonconductive pry tool to loosen the adhesive and separate the display cable marked in blue from the back bottom side of the display.

I found the area where the camera body cable attaches to the blue outlined area the easiest to get the solvent in and begin detaching the cable. Use caution as both the display cable and screen cable are quite fragile.