This last week we we using our double oven when all of a sudden the upper oven went into self-clean mode by itself. When I noticed this, I hit the off button and the cleaning mode turned off and said it was cooling. After about thirty minutes with burning food inside, I noticed the top burner was still glowing and it seemed as if the oven was still extremely hot. I decided to turn off the circuit breaker and left it off for about ten minutes. After I turned the circuit breaker back on, the oven display is now completely blank and won't respond to any inputs. Also, the door is still locked from the self clean mode.

Is my oven dead? Is it even worth fixing and if so, how much would it possibly be? Is there anyway to unlock the upper oven door to get the burnt food out? And finally, is there anyway to just use the bottom oven?

To all those responding, thank you for your help!