In terms of legal Latin maxims, not that I have found, but we would probably need to look a bit more into what the intent is. I understand the issue is that the intent is for the board member not to vote. The board member may be nominated in an advisory capacity, and might not be working on the report. Perhaps that's what's being contemplated, but I'm speculating.
On May 22nd, 2018. See this statement in context.