If hypothetically Mildura remained CAVOK and you autolanded in CAT II conditions on a CAT I ILS you would have a alot of explaining to do. The ATSB is kidding themselves if they are subtly suggesting that this is what should have happened.
Hindsight's a wonderful thing I guess, but what's less 'legal' - diverting to an airfield that has a 60 minute holding requirement on the TAF when you don't have the required fuel, or doing an autoland in low visibility conditions at an airfield that's only certified to Cat I?