Hello All, I've attached a pic of the deconstructed key end, I had broken ones, The clipped paper clip worked best for me, all so letting it rest in warm water helps to loosen things, just the blade part not the main body with the electronic components. push the paper clip down through the roll pin the clipped end will after a few attempts catch as you withdraw the paper clip and pull the roll clip out far enough to allow you to get hold. After that simple, I used the metal key blade to leaver the internal black plastic part away from the silver body. I posted a thread last night showing my replacement part I had it 3D printed By Shapeways 3D printing in the Netherlands,
The part can be bought if anyone wants one or two, just search on the Shaapeways website for Brera Spider or key cap and you'll find my shop with the part, its strong black flexible plastic, a different look, could be painted silver but I dont see the need it stron and durable and will last as long as the car.