I must be hallucinating. For the last two hours, it appears that Ernesto has moved almost due west, or may just slightly north of due west. I saw this first on NRL's site, and then on SSD, and now I see it on weather.com, too. It might be an illusion, but the CDO has remained south of the coast of Haiti, and if this motion continues, the impact on the circulation won't be significant (from interaction with 7000 ft mountains in Haiti, that is). Also seems to still be a great deal of southwesterly shear, looking at the cloud tops zooming off to the northest of Ernesto.