Actually, I haven't. I did have the unfortunate luck of being chosen for an attempted murder of a police officer trial. We did not convict. It's an awesome responsibility to determine the fate of a man. The whole "reasonable doubt" thing finally makes sense at that point.
Yep. I never want to be in the defendant's chair. Luckily I had gun knowledge and had to explain to the other 11 people that when an AK ejects a casing in a small room, that casing could end up pretty much anywhere by bouncing and rolling. They all thought they just dropped in a neat pile at your feet. I also had to explain what Condition 1 on a 1911 meant. The 1911 fact alone decided the case. It caught the defendant in a huge lie that he pinned his entire defense on.
Anyway, excusing yourself from the jury is admitting that you could not convict or possibly wouldn't not convict a person. In this case I'm assuming that you would not convict the husband due to your feeling the husband was justified.
I could not judge this hypothetical case without bias. Assume no more than that.