It's really not though; fully knowing that this offense can't get anything going, you start managing to get runs just like Boone did.
If Zimmer tries to steal and gets caught, well we'd be in the same position we are in now.
If Zimmer did get the steal, we'd be 3-3.
Why carry 3 catchers when you can't actually burn your catchers for pinch runners when two of them don't run well?