2 things:
1) I never had trouble getting anything fixed at the apple store. A good attitude and some smooth talking will get you anything. A while back they even replaced my cd drive in my macbook because it didn't work "sometimes". This was hard to prove but it didn't matter. Even better: they recently fixed a lot of parts for me 2 months out of warranty. I have had some bad luck with my macbook but I am glad I bought it at Apple and not Dell which would have me send it TO them for every nag.
2) I once cleaned my Macbook Pro with a disc liek that, and had a hard time getting it out. The push-out power of the drive was not good enough to push the brushes through the slit of the macbook pro. I was lucky to be able to pull it out with a set of tweezers.