In the short story, we see that Garrosh removes Grom from the vision of time before he can see hope return to the orcs in the form of Thrall and the New Horde. This causes Grom to despair and trust Garrosh. Perhaps, in the end... we will see Thrall or someone else show Grom that all was not lost, and make him abandon the cause of the Iron Horde, redeeming himself?