What Hart does is very sustainable, because there's not a lot of acrobatics involved.
He's just technical sound and very quick on his skates, and I think as he gets more experience his anticipation has improved.
I think it's less about trying to stop every shot than it is making every shot a low probability event (i.e. get in the right position and the shooter has to make a perfect shot).
The last few weeks he's just taken it up a notch and has handled the stretch run pressure without a hitch.
We deserve this, the Hockey Gods gave us a one/two punch this season and we're still standing, so it's time for us to have "nice things."