More tips:
Rear door handle extraction is more difficult than the front, because it's a tighter squeeze to get it out.
But here are invaluable tips on getting it out as efficiently as possible (least amount of teardown). First the door card comes off, follow videos on youtube or other sites cover how to do that.
Window fully raised, for this job.
Layer some TAPE over the chrome exterior handle, couple layers of masking tape. Trim the tape to follow the shape of chrome. This will prevent possible scratching of chrome as you wiggle and extract the handle through the inside of the door.
Press the "lock" button on the console to retract all handles, then through the inside of the door opening, reach in and unplug the connector to the mechanism so it remains inactive (car won't accidentally present the handle while you're pulling it out).
These next steps sound strange... but you need to do them to get some clearance in the door to wiggle the handle out.
Remove the exterior door trim chrome strip running along the window glass. You do not need to pull off any rubber seals from the sides or edges of the door. The chrome trim pulls straight up. Start at the trailing edge of the door and get a grip on it. Just use your hands and fingers, no tools. IF you yank up mightily you will kink and likely ruin the trim piece as it will bend in the middle before freeing from the rest of the door. Instead, pull up a bit at a time, traveling in multiple passes along the window width, inching your fingers along pulling up more each pass, repeat, until it's freed. It's on their firm, so you be firm. (When you're reassembling, you press it on, go in reverse fashion aligning trim with surrounding chrome trim starting at the leading/hinged edge of the door.)
Now, inside the door... Undo the top bolt holding the vertically oriented window guide rail as seen in the large hole you'll be extracting the mechanism from on the inside. I think you have to remove the sticky cover over an access hole to get at this bolt. When the bolt is off, it allows the guide rail to slop about at the top, as it remains fixed at the bottom side..
It's the combination of chrome trim removal and sloppy window guide that allows enough clearance to be made for handle extraction through that hole opening in the rear door.
The handle mechanism is held by 4 bolts all of the same size, you'll have to go by feel to get at the uppermost rearmost bolt. A quarter inch socket driver with 10mm socket works all around. A ratcheting 10mm end box wrench also handy for this job.
It's hard to explain, but once the mechanism is freed inside the door, allow it to drop and rotate (in the direction a wheel would turn on that side of the car) about a quarter turn, bring the thing forward of the hole and then extract it backward out through the hole. You might have to push the window out of the way as you do this. It's tight, like 1 mm to spare but can be done. Be careful of the chrome even though it has been taped, some sharp edges in there can gouge through a couple layers of tape easily.
If you drop a nut into the door, have a magnetic retrieval tool on hand. I used mine about 3 times per door. It finds the metal nut easily in the bottom crotch of an all aluminum door.