This is actually a breach of the human rights charter here in Victoria under state law and also the matching commonwealth law set. Political activities and freedom of expression are protected under commonwealth and Victorian law. As the RAA has powers inferred upon it by a government body (namely CASA) it is subject to these laws, Ian will have a case under the VCAT / Supreme court here in Victoria. Ouch the cost when they lose! Damages as well are applicable in these circumstances.
There is also no appeals process available, which is a breach of 'Natural Justice laws'.. Hmm High court orders anyone?
SLutter and Gutter do not do, no win no fee for commercial entities..