Before anyone starts speculating on what the developer did "wrong", keep in mind that the Mac developer Charlie Monroe was mistakenly flagged and then reinstated by Apple just a few weeks ago: http://blog.charliemonroe.net/a-day-without-business/
Does it normally disappear if a dev account is terminated?
I know it can sometimes take hours for an app to propagate in the App Store after it's been released by the developer. No idea how it works for Apple pulling an app though, if they did or will pull it.