I know, apparently he was given a life sentence but released after 12 years. He then returned to his native New Zealand. The marginal 10-2 verdict was worrying too as it shows how you can't predict a jury.
But it was a very different case in so many ways, to judge from the info Neteditor has given. He pleaded guilty to manslaughter on the grounds of provocation, didn't construct multiple scenarios wasting time and money and causing additional grief (though he did pretend innocence initially), and above all it wasn't premeditated. (Posted before I saw Neteditor's post just now.)
Although I had rather a shock as to the comprehension of the British public when I served on a jury many years ago, I am hopeful this one will return a unanimous guilty verdict because of the facts and I think the judge will give clear direction on the 'reasonable doubt' question, i.e. you can't just say aliens might have done it.
That said, as you say, it's unpredictable.