make sure u check the spoiler before giving it to the garage. I had to remove my oem spoiler to wrap the car, and I thought it was glued on.
Its secured by 2 bolts at left and right hand side, and im pretty sure theres 2 of those clips that always break, in the middle of the spoiler.
All around the spoiler is the double sided sticky tape which is normally used to hold badges on cars. If you use the fishing wire to try take the tape off, you will get caught on both bolts, and wont be able to get the sticky stuff removed from the rest of the spoiler.
The way I done it, was I got a Stanley knife (well... the scalpel thingy) and slowly had my mate lift up the spoiler so I could slowly slice through the sticky stuff.
Make sure u know its glued, and not just double sided the whole way. it is a bitch, and took me about 4hrs trying to get it off before I tried scalpal