The ASX will now have to make the decision that the de-listing is by "special resolution" instead of "ordinary resolution" if not then they are going against the quite clear ASIC rules regarding "special" and "ordinary" resolutions. Ordinary resolutions
election/re-election of directors
appointment of an auditor
acceptance of reports at the general meeting
strategic or commercial decisions
increasing or reducing number of directors
passing a board limit resolution (for public companies).
Special resolutions
Special resolutions are needed for certain changes as defined in the Corporations Act. Decisions like changing a company's name, winding up the company, or changing the company's type will require a special resolution.