Yes, but there are a bunch of electro-mechanical locks that should stop you getting a second cd in there and which will effectively stop you removing a CD that's in the unit. Fingers crossed only one is in the mechanism and the second has slid in above it.
If there is only one in there and stuck, do not try and dismantle the mechanism, try my method of disconnecting the iBus cable first and then power it on and eject. That worked for me when I tried putting an mp3 disk in and the head unit had an allergic reaction to it and refused to eject it. There's a thread in the how to that I wrote about it at the time but the gist of it is in this thread