I can see why they'd do it. Publiscising it is a little, I dunno, crass.
But not letting the guitar 'out there' with some significant flaw when potential users down the line might not know that it was second class stock sold off cheap or whatever, or someone buys it from them cheap or a worker takes it home and it ends up being sold as a full blown carvin; someones going to be dissapointed with it and word will spread based on a guitar/guitars that are unrepresentative of the brand, if the provenance is lost or intentionally concealed.
So, its a smart move to do it. Its bound to drive up prices, but how much depends on how often they make a cr@p guitar.