Yesterday I was playing Lost Planet at my parents' house when I got a message from a couple XBL friends indicating the 1,000 people online was going down NOW. Unfortunately by the time I got NBA Live 07 in the tray and got into an online lobby, the 1,000 people had dwindled to a mere 965. 

Despite an influx of people looking to get the achievement, the numbers remained in the 800-900 range for the better part of an hour. Finally I had to call it quits and drive home. Once there, the numbers had plummetted into the 600-700 range. Considering the dubious quality of the game, I doubt 1,000 people will be online again. I know some people who have taken their games back to retail after getting the achievement, or otherwise disposed of their disks.

One more chance exists though. . . perhaps on the 25th.