Okay, you can be fine and accept giving up on a play. I won't. It's actually embarrassing as this is something I hear bantam coaches "ranting" about consistently.
It's a moot point because Mrazek didn't give up on the play.
Watching the replay, he played the initial shot well. It was a three on two and the puck carrier had a lot of room to work. Mrazek came out to play the angle.
Unfortunately the shot hit him and it sounds like it caught part of his mask, and rebounded right back to Raymond. Instead of retreating to his net Mrazek is overly aggressive and chases Raymond beyond his own post.
It was a bad play on his part, but he was great the rest of the game. The idea that a goalie would give up on a play leaving a wide open net is absurd.