I know I should just wait for tomorrow. But if Elmer is in Az that means he is not needed here. This would be the day Teck looks over the material as expected. So tomorrow should see a NR telling us the details.
Sure, it's possible that he went there while some last numbers get ironed out but in either case I believe that it is done and ready for the press. He has been pushing as hard as he can to get it done so it would not make sense to go glad handing in Az if there was something important to do.
The more I think about it the more I think the rumours of BFS trouble are wrong.