Flying him home might have been the most rational and compassionate thing from the standpoint of medical treatment, but was it somewhat questionable as far as preventing spread of contagion? Hard question.
Given that Ebola is not very contagious--it requires direct contact with infected bodily fluids--flying known patients home in an aircraft equipped for that purpose is not a factor in spreading disease. OTOH, the people who don't know they have Ebola and become symptomatic with vomiting and diarrhea during a long flight might pose an infection risk.