OK, got the door card off without breaking anything (other than six of the glued-on mount points which I will try to hot-glue* back on tomorrow). Got the window back up and secured with a strong suction cup for now.
Found a busted carrier clip and the black piece. "Oh I have new ones!" Yeah, for the FRONT doors. Why would they use different clips for the back doors? So I gotta get those on order. edit: found this repair kit on ebay, ordered that.
https://www.ebay.com/itm/375852360588
The pics are of the vertical sunshade mount points. Getting that top ciip to let go is a real beeeyotch hence all the scratches.
The third is the difference between the front door clip (top) and the busted rear door clip. I can't find the part number for that, realoem doesn't show it.
The fourth is this air hose that slips onto a fitting on the back of the alternator. I have no idea what it does, but I got it popped back on. Doubt it's related to my IAC valve issue — I have a cheap amazon part coming tomorrow. I think Rock Auto is closing out genuine Bosch parts for $60 "FAMOUS BRAND ABC3727" but I'll try the cheap one first.
*someone recommended black JB Weld which I used on one of the front door cards, but it's not that secure. I tried using a heat gun on the old glue residue left on the card which made it nice n sticky, but there isn't enough adhesive left to do much.
__________________
2001 E53 M54 5MT Oxford green over crusty black leather 206,000mi
2002 E46 M54 2.5 5MT silver over black sensatec 217,000mi