Blackberry won't end call

[GoingUp]

Stuck on a conference call that has ended. During the call, I exited the call screen to go look at my calendar. Now I come back in the phone app to try and end the call and it won't end when I press the red call button on my phone.

There is no end call option in the menu. Anyone know how to fix this?

I have the new Bold.

 

[ChAoTiCpInOy]

Take out battery?

 

[GoingUp]

Thats what I did and it now works. Software must have run out of memory.