It's hard to be believe an organization can be so irresponsible in this day and age.  They did not have a checklist at race finish to make sure all starters had made it down?  They did not have a protocol for engaging S&R if something went wrong?  The volunteers left the course before all racers had even summitted, on a race with a notoriously dangerous descent?

I don't know any of the folks involved, but it sure sounds like some seriously inept planning and response.