This will prevent it happening in the future, though won’t fix any that already exist.
It is possible to reset them via the rails console, though if you don’t have many I think it would be easier to use the UI to trigger the ‘return vote’ mechanism if you can.
Hmmm. That’s unfortunate. You could try undeleting it and moving it to your #staff category and then closing it and archiving it there. All three of those actions should release the vote so hopefully one will work. If not, we can take the rails approach if it’s stubborn.
And the fix is now here too:
That’s unfortunate. You could try undeleting it and moving it to your 
If not, we can take the rails approach if it’s stubborn.