Yeah, I kind of felt like this was almost a must win for both teams. Indy got their road win in G1 in what was fairly lucky fashion. Now they've got to win another game in OKC where they've crushed teams all postseason outside of 2 games. And for OKC, even knowing they had G5 and G7 at home, it's still a 3-1 deficit which is pretty hard to come back from, even for a 68 win team.
I'm definitely not writing Indy off at this point, but I agree that was a big missed opportunity for them.