I don't see why you think the answer should have been anything...

I don't see why you think the answer should have been anything other than "No" to this question.
The Board said that sales of oil to them amounted to less than 2% of sales.
They also said that there are continuing discussions re future supply.
Looking at this from the perspective of new uses for oil, it is not unusual there will be a shaky start as with any other similar product. Marketing and brand power wins over a new product most of the time.
People still drink Coke even though it is killing them.
From my reading of the announcements it seems old Frank is left out on a limb - glad I'm not him.
Perhaps too much trust by the board towards Frank was their main crime?
Easy to understand giving trust to the bloke that has the lion's share of exposure to the Company he manages I reckon. Why wouldn't you trust him?
Cheers,