Sure I will excuse the cat! Mine supervise too, just doing their job hey? Opening the case is an option, especially if it gives better visibility and/or access to inside of the drive. Did you try the pin hole ejector on the front of the drive? I suspect it probably gives the same result, only 1/2 inch opening?
Here is an idea....what about a long flat finger nail file type device that you can insert, hopefully locate the cd and maybe move it? Hack saw blade is another one that comes to mind.
Third and final idea...Is this under warranty??? If it is, don't do anything!! File a warranty claim. Who ever heard of this happening anyway? I bet the manufacturer would want to know. If it is not under warranty, get that hack saw blade.