Kyokai's decision not to promote Hakuho was because Hakuho let Asashoryu to dominate whole basho with no much competition. They told that Hakuho could not actively compete for yusho, and Shoryu's yusho was decided before Hakuho and Shoryu match. This was exactly the point which made Mainoumi so disappointed.
Mainoumi was saying that if so, why not to set Hakuho VS Shoryu bout on the 14th day. Mainoumi was the one who was for Hakuho, even he mentioned that there should be no reason not to promote him and Kyokai does not have wish to promote Hakuho. Kitanofuji, who was attending as caster today, was against Mainoumi and even told him "That is not our problem , the people in shinpanbu will decide that".