I'll take them at their word that it was a mistake just as I'll take MSNBC's word when the screw up and admit it.
Every news org makes mistakes and issues retractions from the top cable news to my local newspaper. They all issue retractions at times.
Problem is they release bad info, then take forever to retract it and only do on page 43.
So it's amounts to a rumor that gets repeated over and over. It's called "Availability Cascades"
Obama's regulation czar invented the term.