OT: Urgent, how to force eject a CD from MacBook

[Tiemo Hollmann TB]

Hello,

 

need urgent help. I was burning a CD in my Mac Book but canceled the job
while running.

Now the CD can't be ejected anymore, it turns, but neither with the eject
button, nore from within  liquid app it can be ejected.

I have booted twice, while booting, the CD turns but can not be ejected

Is there any emergency hardware trick to eject a not recognizable CD?

Thanks for any quick help

Tiemo