I believe I may be watching a different trial than you.
The jurors are not idiots, that is clearly illustrated by their questions to witnesses thus far, so they are not disconnecting this hypothetical abusive male and his childhood from Travis Alexander. They know exactly who the DV expert was suggesting her testimony was applied to.
I do have faith that their questions will reflect that they see through this little stunt to realize that the DT just played dirty pool and snuck in testimony that was not supposed to be relevant or discussed in this trial.
I hope Juan asks this expert to explain her experience with abusive personalities who stalk.
Turnabout would be so lovely to see.