First of all my deep sympathy to the families of these climbers. I myself climbed with Nikko in 2005 and I have been worrying about him and the other climbers since all this began. Today I still hold a glimmer of hope that Nikko and Brian are found.
Without making any judgment on their actions, I have been contemplating an alternate scenario to what has been discussed up until this point. I have tried to stick to facts and not speculation, but without the climber's to tell us what happened we may never know the whole story. Some of the information we get is presented as fact, and later turns out to be inaccurate. I'm sure as time goes by more factual information will surface and perhaps we will know a little more about the decisions that were made and be able to develop a more informed sequence of events.
All this being said, and using information gleaned from this site as well as from the media, here is an alternate scenario...
Is it possible that all 3 climbers were well when they dug the snow cave on the east side of the mountain? Perhaps they could not find their way to the Gates because of the weather or fatigue. Perhaps they chose to dig-in for the night on the east side to be out of the wind. They faired okay through the night. They arose at some point as the weather worsened and thought they still had a window of opportunity to get off the mountain. The wind was too high to go over the top and down the south side. The three felt they still had a chance and so they did not call for help. Instead, wet from the condensation in the cave, and with a developing storm, they began to descend. They would be cold and shivering as the dampness on their bodies froze. They set up an anchor and began the process to rappel down. An accident occurred. Someone slipped. James attempted to stop the fall, but dislocated his shoulder while holding the fall. His attempt at preventing the fall was unsuccessful. With his last energy and with hypothermia developing, he craws back to the cave. Once inside, he uses the last of his energy to make a desperate call for help on his cell phone.
If it is true that he made statements about Nikko flying and Brian gone for help in town, then perhaps with his condition worsening and with his mind unable to accept what he had seen, this was his mind trying to cope with the accident.
This might explain why the other two never called, the dislocated shoulder, the strained comments made by James.
No judgment here, no criticism of these guys, just another scenario for consideration. If I have missed a crucial piece of fact that contradicts this theory, then I apologize. I mean no harm to anyone. Just seeking closure. I welcome the thoughts of other experienced climbers.