stuck CD in superdrive

Hello,

I've got an iMac running under Yosemite (10.10.3) with a CD in the superdrive. None of the eject methods I found while googling (eject button in Menu, drag icon to trash, drutil eject, drutil tray open, mouse button during reboot, single user mode + drutil eject) worked. The disk is unmounted, but not ejected; The disk also can't be mounted using DiskUtilitly anymore.

Any help is appreciated.