It's good he started recovering so quickly. There are a few cases where the HAPE or HACE (edema or swelling in the lungs or brain) continues, and people head to the hospital even after getting down. It happens.... fortunately not that often.
On 6/26 someone from another party apparently had edema to the point they had to go to the hospital.
The guy I was hiking with developed what he though was a chest cold while we were up there, but it subsided after our trip and we returned to lone pine. I suspect that was a slight case of pulmonary edema as well.
