Then I would expect Mishin's spouse (Isn't she a coach as well) to abide by this same code of ethics, and not to have offered her own salty opinions on Jason Brown.
Brian was perfectly ethical, he answered the question, which was about Liza, and was gracious in his praise. Many women from many coaching centers represent Russia, represent it well, and do marvelously by their country.
To make an analogy, I may love Jason, but if Eteri T talked about how wonderful Nathan/Vincent/Ilia were, in response to a direct question, I would not consider it an ethical lapse. Nor is this.