"A great deal of anger has been expressed"
Now the Canadian Human Rights Commission has responded; you can read their slap-dash reply here (I'm impressed that they even managed to spell one of their own staff's names wrong).
The CHRC didn't cite any case law in their reply. They made no legal arguments. Their response was just a paranoid, self-absorbed conspiracy theory that someone, somewhere on the Internet named "Edward Kennedy" wrote that he really hates HRC investigator Dean Steacy, one of the CHRC investigators who will be cross-examined next week.