This is all for nothing, if your FC is stable, then it has done its job. If there is a significant drop then bring it up. If it's zero, then slam because the bunny took out your chlorine. But if the CL did its job, then that's what it's there for. I mean how long was it in there? Of it didn't start to break down, then there's likely not a whole lot of bacteria from it, not so much that your FC couldn't handle.
But hey, if it makes you feel better to dump a bunch of $ in the form or chlorine then wait for it to burn off, then it's your call, just know you're shocking to make yourself feel better, not to sanitize.