Would it be possible to travel under such a wind condition? It seems to me that a wind strong enough to clear a path through the waters would knock people off their feet.
God did it, no doubt; but how is likely to remain a mystery!
I think the authors are nuts, but if I understand their hypothesis correctly, the wind would have already died down, after sustained gale like winds for nearly ten hours, by the time Moses and the Israelites got there. The momentum of the water rushing back would have taken enough time for them to cross, but not enough time for the Egyptian army to cross over also.
In a nutshell, they are claiming a rare physical event combined with extraordinary luck produced the event.
The glaring error is that the land bridge would have been exposed by the time Moses encountered it, which is at odds with the Biblical account. But that's an easy fix once you have a workable theory. All you have to do is say the participants couldn't possibly understand physical laws of science and so they naturally interpreted the event as divine intervention and glorified the account.