They certainly believe that the boys at HO - the GB - are indeed the faithful & discreet slave and that Jesus is Head over them: look at this WT from July 2013:
“BROTHERS, I cannot begin to count the times you have put into my hands articles that contained just what I needed when I needed it most.” That is how one sister expressed her appreciation in a letter to the brothers who work at our world headquarters. Can you identify with her? Many of us can. Should that surprise us? Not really.
The timely spiritual food we receive is proof that Jesus, the Head of the congregation, is keeping his promise to feed us. Through whom is he doing so? When giving the sign of his presence, Jesus said that he would use “the faithful and discreet slave” to give “food at the proper time” to his domestics. * (Read Matthew 24:45-47.) That faithful slave is the channel through which Jesus is feeding his true followers in this time of the end. It is vital that we recognize the faithful slave. Our spiritual health and our relationship with God depend on this channel.—Matt. 4:4;