They did a interview with Jussi Parkkila the Colorado Avalanche goaltending coach last week in finnish television. He said that he has never done as much work as he did with Grubauer.
He said that he had to turn to a mental coach in Finland who helped with Grubauer. Apparently he has problems with his self confidence. On the other hand he said that the guy is very smart and coachable with his mistakes. If you show him a mistake he made he can see it right away and also change his game so he doesn't make that mistake in the future.
Now his confidence is shot and it shows. he should get help for that by our goalie coach and defensive play too.