I do remember reading something about water possibly getting absorbed into the coverstock and then creating a sort of haze or phasing.
I believe it was mentioned that it will go away as the water evaporates, or might have to bowl a few games to help get the water to come to the surface, or maybe a little bit of heat.....sorry, I really don't remember.
Joe, wish I could help you more, but this site lacks a useful search function!
I tried doing an advanced Google search, but it only seems to bring back results from the review section of the site and not the forums.