Dings post needs repeating:The GB always tries to have it both ways:
When they want to be obeyed, they are the spirit-directed faithful and discreet slave, God's prophet, the only way to Jehovah -- Obey them without question or be annihilated at Armageddon.
When they are caught in a false prophecy or doctrinal flip-flop, why they have never claimed to be anything other than fallible, humble servants of Jehovah.
That is as simple and succinct as one can put it.