lift the window seal, remove the seat bed and then lower the seat back so its completely flat and then i'm afraid it's time to pull on it. Make sure you distribute your force across a reasonable length of the door card else it will tear and try and pull on it where you know the clips are. I think there are three clips along the top and 4 down the pillar (assuming its the same as an S3).
......or at least that's how i removed mine...
Also when i removed mine one of the metal clips was so tight that it actually pulled the plastic bracket off of the back of the door card so i had to hot glue it back on.
be careful and take it slowly. I did swear alot doing mine
You really need to remove the door sill trim and side footwell trim as they are all interlinked and you'll never refit it properly if you leave it in place.
This guide describes the process: http://freepdfhosting.com/37841f9301.pdf
Off the top of my head, you need to remove the sill trims, these just pull off, but they need a firm tug! Take the rear seats bases out for better access, it's obvious how they come out once you have a look. Pop the rear windows open and lift the window seal between the body and door card. There's probably a couple of plastic screws that need undoing by the rear wheel arch of the card? The whole rear card just pulls off, it's very tight though, so try not to flex it too much whilst tugging. There must be around 4-5 clips along the top, and 3 or 4 down the b-pillar part, just firm strong tugs, as they are the classic VA metal spring loaded type clips, they kind of pop off.
A vague description, it's been 5 years or so since I last took mine off!