Weren't there elections last month at Standing Rock. Perhaps there has been a change in the council that is more supportive of the population and he isn't liking that fact???
I agree with The Sicatoka, the fact that Standing Rock and Spirit Lake have to put up or shut up will be interesting to watch. It's like someone who is running for office and they are continually tearing down their opponent. They finally win the election and say "now what do I do", only this is worse because not only can it cost you your personal prestige it can also cost the people of Standing Rock and Spirit Lake in the long run. A weight has just been put on Ron His Horse is Thunder. He won't sleep well tonight.
I'm placing the odds on getting approval at 50/50. If it doesn't happen, we move on. If that happens, the real losers in the situation are going to be the people of Standing Rock and Spirit Lake and they can look within for blame.