Rear Deck Spoiler Replacement

Has anyone had experience with removing the inside trim on the deck lid to gain access to installed equipment? My spoiler has been damaged by Spoiler vs. Garage Door. The Garage Door won and the punishment for loosing is replacing the Spoiler. There appears to be a couple of "access" panels in the door, but I have not attempted to remove them yet. No obvious retaining clips or screws to tinker with. Your help will be greatly appreciated.