The appointment of Sinfield is clearly a first step into retirement for GH. The fact that he comes in now is simply to placate the worried masses. I'd fully expect another coaching appointment to be made at the end of this season for 2019 and beyond, along with a number of new players.
I did smile when Gary said that "all of our players have performed to outstanding levels over their time here, but not necessarily this season". No 5h!t Sherlock...