I really don’t know why you are bashing your head off that brick wall – especially when there is a lawyer involved (who I will bet my bottom dollar is not a strata lawyer).
No matter what other cases you find, Rumpole of the Strata is going to dismiss them and try to bully you into submission.
Your committee is hiding behind the lawyer and the lawyer thinks they are a bit superior to the rest of us, so nothing you say to them directly will make any difference.
If I were you, I would go for mediation, then for NCAT orders and let them try to bully a Tribunal Member, with bluster and BS, into ignoring the law.