Pull straight out towards you. Pull like you've never pulled before. I found it helpful to start in the top corner and "peel" it outwards while I was pulling. In addition, I had one of those forked clippy pry-bar things that really helped.
yea you just have to pull those pins out of the door so pull as hard as you can... i did the opposite as raymond and started at the bottom where the seatbelt bolts in... getting it back in is the real tough part..