It has been established by the NSW Court of Appeal that residents of strata schemes are entitled to expect a certain amout of cut and thrust in their communications, in this case overturning a previous $120,000 payout for defamation
This would not be strict legal precedent in Queensland but it might well be used as a guide.
Just wait for your next AGM then put forward a motion asking the owners to instruct the committee to issue the apology in the wording you provided. They may not agree but at least then it will be on the record.