John Brown swaps from playing as a defenseman to playing as a goalie because some mysterious voice in his head tells him to. It tells him that he will save more this way and block more this way as well, leading to better stats. But it also makes him feel very disconcerted because he swears he's gone through something like this before. So when he decides to think about it it leads to a panic for him, as he doesn't know how to feel about dejavu. That's not something he has a lot of experience with. This leads to him having a crisis of faith and ultimately not saving a lot, contrary to what John Brown's original intent was to accomplish. So this idea of John Brown changing to be a goalie doesn't really work out in the long run and he doesn't stick with it at all for any prolonged sense of time