That's a high risk play even if it works out, it wasn't the right call, he was pressured and wanted to get rid of it.
Usually players that just want to get rid of it throw it down the boards and the puck is easily kept in the zone by the other team. He had an option to break out the puck with control rather easily if Berard was more aware of what was going on around him.
We see Chabot do that often in Ottawa, Karlsson did it a ton, it's the most effective way to break out when you have control right down the middle. That was bad luck, if it was a normal game no one would be talking about that. It's the WJC everything is amplified.
All that being said, I don't think he had a good game. He was average, you can see the skating ability and that he thinks the game at a high level but he's bobbling the puck and not moving as confidently as he can. The entire D has been that way though tonight, even York has been brutal in the 3rd.