I'm with you up until "blame". I blame the fact that they're human and not robots, and I don't think they (or Ollie) deserve blame in any other sense for coming up with a clunker given all the various circumstances.
I don't blame Calhoun or Boatright for missing shots. They weren't all bad shots and they were shots they have to take. That, I consider, a clunker. Defensive effort, there is no excuse for that. It was being outhustled up and down the court on fast breaks. It was not sliding in for charges, or going up for blocks. It was not even bothering to rotate.