I was just contacted by a member of the dive group who does not wish to participate openly in this thread. This is what I learned.
1. The diver agreed before the dive to use the inflator manually.
2. The diver did not appear to have a problem with that during the dive.
3. When the diver decided to go to the surface, she did not seem to be in distress. The diver who contacted me did not see her signal prior to the ascent, but the assumption was that she had reached the 700 PSI, the pressure at which the first low on air diver was supposed to ascend according to the pre-dive briefing.
4. The DM sent up a DSMB, showed her how to work the reel, and she ascended alone.
5. She did not appear to be in distress during that ascent, which started from a relatively shallow depth.
6. The person who contacted me did not watch her the whole time, but believes she did not take enough time on ascent to do a full safety stop.
7. The person who contacted me saw her reach the surface safely, and she did not appear to be having any trouble there.
I was also contacted by someone else who had information he was not at liberty to disclose. Nothing in that contact disagrees with what I just wrote.
From what I have been told and from what I read on this thread, the inflator hose had nothing to do with this accident. IMO, continuing to discuss it just gets in the way of a discussion on what really happened.