Reinhart and Descheneau have been split up for the playoffs so that the Hitmen can't focus all their defensive efforts on on one. The Hitmen have been doing a good job of matching lines (home ice = last change) through the first two games to shutdown Reinhart. He's almost always facing Helgesen/Virtanen/Twarynski and Kanzig/Harmsworth. Those are essentially the most physical players on the Hitmen team and they've been really good at taking Reinhart off his game.
This has really opened up the ice for Descheneau's line. I've also noticed that the ICE really seem to struggle getting the puck out of their own zone under pressure - if the Hitmen are strong on the forecheck, Reinhart never touches the puck.
All that being said, I've always thought that Reinhart is a very invisible player out there. You never really notice him when you're watching the game, but you look at the stats after and he's got 3 points. As a small guy, he really knows his game and where to be on the ice and picks up the points as a result.