Here's the video of the Douglas Murray on Mike Kostka. It's pretty clear that it's a shoulder to the head. Murray has a hearing with the NHL's department of player safety. Murray never been suspended by the NHL according to his player page on TSN.CA.
Moment of impact on Murray-Kostka hit. #Habs #Bolts pic.twitter.com/NjNt4LYX19
— NHLEXPERTPICKS.COM (@NHLexpertpicks) April 2, 2014