I just looked at this today so I guess I'll give my thoughts on it..
2 Thessalonians 2:1,2
However, brothers, respecting the presence of our Lord Jesus Christ and our being gathered together to him, we request of YOU not to be quickly shaken from YOUR reason nor to be excited either through an inspired expression or through a verbal message or through a letter as though from us, to the effect that the day of Jehovah is here.
Ephesians 5:6
6 Let no man deceive YOU with empty words, for because of the aforesaid things the wrath of God is coming upon the sons of disobedience.
Did they not deceive people with empty words?
1 John 4:1
Beloved ones, do not believe every inspired expression, but test the inspired expressions to see whether they originate with God, because many false prophets have gone forth into the world.
On the online Watchtower library, inspired expression can mean, "Or 'through a spirit'"
All Scripture is Inspired of God and Beneficial
Likewise in heaven (1) Jehovah God originates his utterances; (2) then his official Word, or Spokesman—now known as Jesus Christ—often transmits the message; (3) God’s holy spirit, the active force that is used as the medium of communication, carries it earthward; (4) God’s prophet on earth receives the message; and (5) he then publishes it for the benefit of God’s people.
Looking back at 2 Thessalonians.."nor to be excited either through an inspired expression or through a verbal message" Watchtower used both inspired expression (by saying their message comes through holy spirit) and verbal message (by giving out false/incorrect dates) to excite and to lie to people and have contradicted themselves by calling themselves "God's prophet on earth." Somehow Deut. 18:20-22 is forgotten..