Since I'm bored, I'm actually going to go and prove that Maatta wasn't "getting burned on a nightly basis" in the playoffs. In the first round, he was on the ice for 3 ES goals against. In the second round, he was on the ice ice for 3 ES goals against. In the 3rd round, he was on the ice for 5 ES goals against. In the finals, he was on the ice for 3 ES goals against. That puts him at 14 ES goals against in 25 games (most of which I would not blame him on), and with him playing 439:20 at ES throughout the playoffs, that's an ES GA/60 of 1.91. So basically, you're wrong. Glad we cleared that up.
From watching every single ES goal the Penguins gave up in the playoffs, I'd blame about 5 goals on Maatta. There were the 2 ones where he just got hilariously beat and then there were 3 others where he didn't box out his man well and they scored on a rebound or deflection due to it.