Given that a explosion that large (mushroom cloud over 30 mi high) would have had the earth ringing like a bell. I believe that the parting of the red sea would have been due to a tsunami. If this event took place 2-3 years after the volaco erupted then the claim that the parted sea was actually a bay of the med does not work. I have seen very little evedence that spreading ceters are capable of producing earthquakes large enough to generate tsunamis.
Does anyone know if there has been any seafloor mapping in the southern third of the red sea that would be able to detect landslide scars?