His lawyer just has to convince ONE jury member that there is reasonable doubt and he is free.
I can't see why he would plead anything but 'not guilty'. It is probably worth it to him to take that chance.
majority verdict means—
(a) if, at the time of returning its verdict, the jury consists of 12 jurors—a verdict on which 11 of them agree;
(b) if, at the time of returning its verdict, the jury consists of 11 jurors—a verdict on which 10 of them agree;
(c) if, at the time of returning its verdict, the jury consists of 10 jurors—a verdict on which 9 of them agree.
classic.austlii.edu.au