GTFO.
I've never seen more inept coaching. The last time I saw any team play a serious competition with 3 lines was Slovakia's national team back in the late 1990s. Peter Šťastný was the TV color announcer back then, and he kept lamenting: "We're not gonna win anything if we only roll 3 lines!" And he was talking about the damn World Championships which is something like 10 games max, not the Stanley Cup playoffs that may extend to 28 games. I kept thinking of Šťastný's oracle while watching Hiller's antics over the last couple of weeks.
(Šťastný then became Slovakia's GM at the turn of the centuries, he insisted on rolling all 4 lines, and a bevy of medals, including gold in 2002 – the only gold so far, was the result, thanks to teams centered around Šatan, Pálffy, Višňovský, and Bondra. That's without players like Hossa, Gáborík, Demitra, or Chára, who were typically not available due to the Stanley Cup playoffs. Even so, Šťastný insisted that Slovakia was good enough to roll full 4 lines, even if partially composed from euroleagues players, because trusting all 4 of your lines is the only pathway to success.)