Demko played well last night, but is still an unproven #1, Holtby on the other hand is proven and hasn't played for a while and needs to get some action.
Doubt they can repeat tomorrow, the score may be 4-0 tonight, but they didn't beat the goalie clean even for once. Of course they won't be losing every game the rest of the way, there will be games like tonight in one out of every 2, 3 losses.
No matter what, he is not giving the media anything. Downplaying everything and showing everyone that he is keeping his emotion in check is what Green does, this is just him.