Maybe. If he is, then I'm guessing that his big challenge will be to show how high the earth's temperature must have risen, in order to melt enough ice within a short enough period of time, that the rising sea levels would have been called a flood, the world over, rather than a question of "hey, I don't remember those tress in Ugg Wood standing in water last year - is it just me, or are we nearer to the coast now ?"
Of course, you could try to argue that a gradual rise in sea levels could still be named a "flood" in ancient times, but it wouldn't sit well with the rather catastrophic results attributed to it.
It wouldn't recede either, if it was rising sea levels - at least not within the timescales the stories suggest.
I think Djufo faces some fun challenges, if that's his thesis.
Could there be any greater conceit, than for someone to believe that the universe has to be simple enough for them to be able to understand it ?