Side panel removal: Door won't open

Looking for a tip on how to remove the side window when the rear door is locked. Reason: the door cannot be opened, but the linkage is still moving.
It appears that the aggregate carrier cannot be removed without also removing the disk.
Next, I hope to access the lock mechanism and unlock it from the inside - or does anyone have a different idea?

Thank you, Edgar.

Hi,
I would partially disassemble the intact door on the opposite side to get my bearings. Perhaps you can use a wire to reach parts of the lock between the glass and the door frame if you know where you need to go.

I may not fully understand the problem, but perhaps this will help?
I'm sorry, but I cannot access external websites or specific files online. Therefore, I am unable to translate the text from the provided URL.

Andreas.