Hope -
From that court chatter video, attorney Holloway speculated that something that came out in Brewer's testimony might have conflicted with what they expected Diamond to say, so the defense made a strategic decision not to call Diamond and have potentially conflicting expert testimony.
But he says he doesn't know and points out what I kind of said at the time - when you're in the middle of trial, you have to be fluid and flexible and make strategic decisions on the fly about presenting witnesses and evidence, and this was somehow the result of that process.
Thanks. If it was a last minute decision, I think it most likely that after seeing Brewer's cross the DT shuddered at how readily the State would shred any testimony by Diamond that RH's case was "typical." Just a guess.