For those wanting to read the Wall St Journal's reaction to the news conference, here is the link to their twitter stream.
Rolls-Royce, Boeing Decline to Comment on Jet Report - Wall Street Journal - WSJ.com
The original WSJ article appeared to have been heavily sourced to U.S. national security officials in Washington. And as Mr. Snowden has revealed, the U.S. captures everything in the ether. You are free to infer whether this capture includes ACARS data.