CDRW locked when Nero hangs

I’m not sure if it’s a software or Windows problem. but it happens with various Nero versions, including the last one, and various writers:
Ocassionaly nero will hang at 96% and become non-responding. I have to close it from the task manager. The problem is that the writer door is locked and the CD keeps spinning until I restart the computer.
Is there any way to spin down and unlock the writer door?