Re: 83 year old aikido black belt repels home invader.
No, the prosecutor won't pay much attention to what you and I say on any forum UNLESS you or I are the suspect in his case. In this day and age investigators and prosecutors usually look at social media and on-line forums to see if their subject has made relevant statements and will certainly try to introduce them into evidence at trial.
In line with Mary's comments, I strongly recommend that martial arts students research their own local laws regarding self defense. Some states establish a duty to retreat while others don't. There is no simple explanation that cuts across all jurisdictions. You simply have to know and apply the law in your jurisdiction in a situation like this, or you are in grave danger of running afoul of the law even if you feel your actions are reasonable.