It indeed might show my "ignorance" also; but the claim still begs the question why this guy doesn't REACT adequately in the whirlwinds of a game?!? It is like sailing a fishing boat in murky stormy waters as the captain and thus the guy must respond and react without thinking twice when the time comes.
Jalonen did react, actually. He mucked up the lines quite a bit as the game was underway. If you mean he should have told the guys to
play differently, change the fundamentals of the game plan... well, that's something even the most reactive of coaches do quite rarely over the course of a single break between periods.
Should he have changed the goalie? In hindsight, I'd say yes. But I also know that things can look mighty different from the bench than it looks when watched thru a screen. Vehviläinen was shaky, but because the team front of him was shaky too, so it could be hard to evaluate what's on skaters and what's on the goalie as the game is underway.
Call a timeout? It's an option, sure, but it's hard to say when. After that short-handed 3-2? I don't see many coaches doing that either. After the 3-3 equalizer or 3-4 goal? Maybe. But then again, both were on PP - and the team was able to match the opposition just fine on even strength. 5-3... that could have been a good spot. But could be he simply decided to wait for the break which was only four minutes down. That's a lot in hockey, though, so... I dunno. Maybe, but let's keep in mind that we're now pretty deep down in the details of the game. It's a call that could be debated either way, not some raw rookie mistake one can say he could've avoided for sure.
Either way, he did shake up the lines for the third, so it's a bit unfair to say he did no reacting at all. And I'm not saying he didn't do some mistakes, big or small. He arguably did, the result being what it is. But they were not the kind of mistakes that were easy to foresee and 100% avoidable, even for someone with as much experience as him. I repeat, it's pure hindsight, stating with absolute certainty what he should have done.