This is not the only witness he has done this with.
I don't necessarily see this as a bad thing though.
Juan Martinez is obviously passionate about the case he is prosecuting.
Whilst Jodi Arias is entitled to a fair trial, given the severity of Travis Alexander's wounds, the fact she has changed her story 3 times, it is a tad insulting that this defence team is going with the abused woman defence, when there seems to be very little (if any) evidence to support this. But obviously they have to put on some sort of defence for her, I accept that.
If I was prosecuting this case, after four and a half years of waiting for it to come and then having to listen to the defence trying to make out that this guy knows about Jodi and Travis's relationship, when in reality he knew very little (as did the female coworker Juan shouted at) I think that I would be getting a bit frustrated and short with the witness. I think this witness also likes to talk and be somewhat argumentive himself and needs to be reined in a bit with his long winded answers.
I agree in general that judges and juries don't like the shouting.
However, Juan Martinez is a seasoned prosecutor, I presume his tactics must have worked in the past.
Also, I would much rather a passionate lawyer, than one who was more concerned with social nicieties. But then that is JMHO.
I also think that Juan Martinez is a sort of no-nonsense, straight to the point kind of guy, I really hope he does not alienate the jury with his manner, as I think he is a very, very good PA.