Agree with Prowler. There does seem to be a valid defamation case here for both slander and libel since this was broadcasted publically. I'm sure one of the resident barristers will opine here, at least as far as local precedent goes and the feasibility of such a suit.
Not sure but we may have to prove these allegations aren't true before we could pursue anything relating to defamation. Which if true, the AD is going through the proper process as expected. Lets investigate, proof they aren't true, then go for blood.