"The climber did remarkably well, although arguably he would have risked less by staying put until rescuers came looking."
What would have triggered a SAR operation?  Did he leave word with someone dependable?  If not, what he did was perhaps the best thing to do.  At any rate, it worked.
Valid point. I assumed a solo climber would leave word, but maybe he didn't and thus was highly motivated to walk out. As usual, the level of detail is frustratingly sparse.