Yes, it would be possible. It will probably be attached to the body with a few bolts/screws under the plastic trim in the trunk lid.
If you remove it, having removed the trim without damaging it, you will then need to fill holes in the bodywork, smooth it down, treat it paint it, etc.
...So why not just just leave the spoiler in place? When you come to sell the car, most people will like it.
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'03 Grey >>> '06 Black >>>'10 Silver >>> '16 Grey ^
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