I don't know why anyone would feel the need to explain something that is really only as powerful as hearsay (in terms of the knowledge that it actually happened in the first place)
*edit* Just to be clear, I do believe it happened, and as described in Scripture. I just don't get the idea of coming up with something outlandish to explain something of this nature.
Same thing happens all the time w/ the Red Sea parting. I've read dozens of explainations from scientists trying to show how it could just "happen" sans God. That lucky Moses - he must have been a physics major.