Mistakenly flagging a post

I am feeling guilty once more because I flagged a post to Hazy last night.   A mistake of course caused only by a slip of my finger and so quickly taken up and flagged with no recourse for alteration.    Could it possibly be organised that as on camera for instance, when you are asked a second time if you want to delete your photos, that one has a chance to rectify the mishap?   Or maybe extend the nano second that flashes up to let one know the post has been flagged?  Many thanks if you can help this aged pensioner.