Yesterday, this was legal.
Today, it’s a minor penalty.
“An unsportsmanlike conduct minor penalty will be interpreted and applied, effective immediately, to a situation when an offensive player positions himself facing the opposition goaltender and engages in actions such as waving his arms or stick in front of the goaltender’s face, for the purpose of improperly interfering with and/or distracting the goaltender as opposed to positioning himself to try to make a play,” Colin Campbell, the NHL director of hockey operations said in a statement.
I was lucky enough to see it live, where it will probably be the last time we ever see it.