They are such liars. It's not the holy spirit that directs, them. God sends his instructions to them through angels:
Vindication, vol 3, 1932, p 250:
These angels are invisible to human eyes and are there to carry out the orders of the Lord. No doubt they first hear the instruction which the Lord issues to his remnant and then these invisible messengers pass such instruction on to the remnant.
Preparation, 1933 p36,37:
Certain duties and kingdom interests have been committed by the Lord to his angels, which include the transmission of information to God's anointed people on the earth for their aid and comfort. Even though we cannot understand how the angels transmit this information, we know that they do it; and the Scriptures and the facts show that it is done.
Preparation, 1933 p28
This question is propounded for the benefit of those faithful ones of the remnant now on earth, and the angel of the Lord brings to them the needed information in answer to their questions. This is proof that the interpretation of prophecy does not proceed from man, but from the Lord Jesus, the chief one in Jehovahs organization sends the necessary information to his people by and through his holy angels.
And, yes they have claimed to be inspired:
WT 11/1/31 p327:
The Watchtower is not the instrument of any man or set of any of men, nor is it published according to the whims of men. No man's opinion is expressed in the Watchtower.
WT 6/15/57 p370:
Jehovah has established a very definite channel of communication through which he deals with his people ... It is vital that we appreciate this fact and respond to the directions of the slave as we would to the voice of God ...