I suggest that "banned" should be changed to "deleted" because it is a more accurate word to describe the multitude of reasons why an answer might be deleted. My hidden agenda for posting this question is to test my theory that the "edit" facility which people have mentioned is actually only available to questions rather than answers - so I should find out when I click the submit button.
I must be getting senile because I thinkthat I noticed an "edit" thingy, but I clumsily clicked to confirm the question instead of investigating the "edit" thingy.