GE Oven will not Unlock

I tried to run a Self Clean cycle. My oven locked, but it never cycled. It shows a door error like the door is still open, when in fact it has already locked it. I have turned off power and things like that, however, we can not get it to open. We have even had someone out to look at it and they have not come across this and says they will have to break it to get in. Can someone please tell us how to get it to unlock, without breaking it and reset the control panel that flashes "lock"? Any help would greatly be appreciated! Thank you!