I thought he was fine. I haven't seen the Germany game but I've watched today and frankly don't see what the hysteria on HFboards is all about. Subban was solid and none of the goals were his fault.
1st goal - no chance, weak D if anything
2nd goal - an absolute snipe by a KHL player, that is a goal in any kind of competition
3rd goal - 5 on 3, some slick passing by the Slovaks, not the goalie's fault
Yes, he is a little weak on the rebounds (seems to give up a lot), but he's still a junior, he's got plenty of time to work on that.
Seriously, reading these boards I would have thought Slovakia would be up against the worst goalie to ever play the game of ice hockey. He made some nice saves, you can't expect elite performance from a junior.