Do you read this as a world without oceans? Simple dewatering of buried sediments does not raise sea level.
I think, and this is only by trying to peice together things he's said on other threads and such, that at first the earth was all water. Then land was created in one area, either by god, or maybe through ICANT's bombardment model.
Then, bombardment continued, creating mroe land and burying more and more water, until, I assume, there was no surface water left, it was all buried, sort of like the water table. (You dig down, you get water.) As this dirt and rock built up, the pressure, somehow, forced the water back to the surface, but the dirt didn't immediately compact or "fill in the gaps" which doesn't seem to make sense from a pressure point of view.
Then, after the flood had covered the land, the dirt finally compacted in areas, filling in the space that had been occupied by water, creating the seas and rivers and lakes and such, where the water pooled, allowing other areas to remain dirt.
Of course, I don't understand why the dirt didn't compact everywhere, leading to a continuously flooded earth...unless bombardment continued, building up yet another layer of dirt...but somehow allowing people to survive.
Yeah, I'm not seeing the logic here.