John Gruber's latest Daring Fireball column deals with the story, as it exists so far, of the wireless security vulnerability announced at the recent Black Hat conference.
In his conclusion, Gruber speculates that the oddities of the announcement and demo had their origins in a mistaken assumption that a security flaw in FreeBSD extended to Apple's Mac OS X driver. In the absence of more information, this seems the most likely explanation, especially considering Maynor's reported statement three weeks ago that some demos "weren't panning out".