They wilted badly after the second goal. I don't know if they got discouraged, or scared, or frustrated or whatever the case, but it felt basically over at that point, and after the third goal any faint sliver of hope I had was dashed completely. They played pretty well early on, at least in my opinion, but obviously couldn't keep it up.
Ostman was bad, as we all saw. The second goal in particular was just brutal, and the first and third he could have had, maybe "should" have had, but he wasn't up to the task in what was likely his swan song in Orono, I would think. Kind of a bad look on Boija and/or Barr, whoever decided he couldn't go (but could still take warmups and be on the bench) made the wrong decision.
On the whole, obviously a good season, and the jump we were expecting. Maybe faded a bit at the end, but hopefully with another year of experience and age that won't happen again next year. If they have a good offseason, they should be in position to be an elite contender, if all the right moves get made.