actually there were 2 accidents of the TT in England of drivers who were driving well below the speed limit. The audi TT and the crossfire share similarities in the rear end which produces lift, because of their rounded shape.

and you need the spoiler to create downforce.

it is not a coincidence that all cars which have an electronic rear spoiler activate it around 60 mph (crossfire, SLR) 75 for the boxtser.

so if you pull the fuse and go around 90 mph, you are asking for trouble, and good luck explaining to the insurance agent that you preferred the looks without the spoiler.