Hey Steve-o,
I remember that conversation and I have followed up numerous times to see if that statement continues to hold true. I still believe that it does hold true with one caveat - the wishes of the winning bidder. So for example if JKM wins and for political reasons they wanted to announce to the Korean and Japanese public, IOC would concede to those wishes and announce early.
However, I believe that this legal work has been 98% completed and reviewed for all the submitted bidders and that all remaining documentation will be contained in Schedule A documents which could be vetted very quickly by IOC legal allowing for an almost immediate announcement after the winner has been choosen. See my post here on more details regarding this train of thought: http://shareholdersunite.com/mybb/showthread.php?tid=2802
My experiences though, are based on service bids with a provincial government and are clearly on a scale much smaller than the IOC selldown - so my conclusions could be incorrect. One thing I do know for certain, time will tell all!