Sorry no photos today, but I had to remove (almost) all my everyday carry, and very carefully climb up the driver’s side. I had to observe my weight distribution as well, not looking to break the sunroof or the windshield obviously.
I only brought one of my EDC tools, my NexTool card tool. That was enough to loosen up the antenna and unscrew it the rest of the way by hand.
Yeah, it’s usually because something like the rear wheel well obstructs the window from being able to roll down any further.