It says, “A public office holder”—and you are one—“shall recuse himself or herself from any discussion, decision, debate or vote on any matter in respect of which he or she would be in a conflict of interest.”
What you've admitted today is not just that you were in a conflict of interest, but that you consciously recognized in your May cabinet meeting that such a conflict might exist. It didn't just slide by your desk. You were consciously aware that there was an inappropriate link to your family that would put you in a conflict.
Why did you, at that moment, not call the Ethics Commissioner and recuse yourself?