Rear window leak questions

About a month ago I developed a small leak in the left rear of the cabin. Thought it was the 3rd brake light, which it was partially part of the problem the gasket was very brittle. Sealed up the hole with some tape before I put on the new gasket so I could go around the upper rubber of rear widow with a squirt bottle. Guess what, it leaks too. So now I have to fix the rear window seal now.

I went with my better judgement and decided to keep the calk gun and silicone in my shop and get some advice first lol. If Hank wasn't near showroom I would have just laid a thick bead and went on with my day. Hanks a pavement princess

Looking at the headliner and from dismantling cars from early 90s to 2000 it looks like I may need to remove possibly the headliner? Most headliners don't come out unless you pull the windshield. I've seen it also has a few 10mm bolts and is glued in.

When I was dismantling cars I used to use piano wire to cut out windows but this doesn't look like a piano wire pull since I don't want to cut into the surface that needs to lay flat against the frame of the window. I could use a torch or a heat gun and go around the frame of the window to heat up the metal and push it out, but this isn't a junkyard car that I'm willing to burn up the metal frame or possibly melt the surface of the window.. I'm not 100% confident that I could remove the window without any issues. But I digress.

Moving forward for now I have a few options. Get some 3m and fill in the voids by pulling back the rubber outer seal. Use the same messy 3m and tape a nice line and lay a thick line overlapping the rubber edge and then using a putty knife to hopefully make a nice smooth seal. Or take it to a body shop, no glass places will remove the glass and reglue it. I've even talked to safelite and they quoted me a little over 2k for a new window. Mines perfectly fine.

Thoughts, advice, help before I get crazy with the adhesive and make an insnae mess

Edit: I've talked to multiple body shops and none of them will do it. They all use glass services, still calling around some more.