"Spirit-Directed" is a total cop-out.
"Inspired" is defined as "moved or guided by divine influence."
"Spirit Directed" is the same as "Inspired."
But Watchtower is such a dangerous mind-control cult that they can hoodwink members with their secret in plain sight.
The Bible was directed by Holy Spirit and is therefore inspired and is infallible.
The Watchtower is directed by Holy Spirit and is therefore not inspired, just directed. So it is fallible.
But it is right. Right up until it must be changed, then it was not right enough, but it's right now.
This nonsense plays all the way through the organization. We are supposed to believe that the Governing Body members are guided by spirit even though they won't say it. We aren't even supposed to know about the 2/3rds majority thing because that would help to shatter our illusions.
Basically, they cannot point out the absurdity of this whole subject directly. They must continue to talk in hair-splitting definitions of their own terms that they made up.