I have no idea why the Air rep. is saying "if it comes to that." If this is a 3rd party booking what is the Air rep. waiting for?
I wouldn't wait on Air to handle this. Call them back up. Ask the rep. directly if it is against their TOS to have a 3rd party book for others. When he/she replies with "yes it is" - then tell them that the previous rep. did not offer to cancel and you need the current rep. to do so. And ask for a follow up in writing that this will not affect your superhost status. And have them put in writing the reason for the cancellation.