He's right on at least one count. New Zealand has to de-politicise issues of compensation for wrongful conviction. Politicians should not be allowed anywhere near these kinds of decisions, it should be a matter for the courts and the courts alone.
As I have said before, I am very much in favour of a system that is something like the American system of a "penalty phase" after a guilty verdict in a first degree murder trial. IMO, ALL criminal trials should have penalty phase, whether the verdict is guilty or not guilty. This is how I envisage it working...
When there is guilty verdict, the penalty phase is simply what happens now. The judge passes sentence, and the defendant is taken down and serves his sentence
In a not guilty verdict, first and foremost, the defendant should have ALL of their costs reimbursed, coming out of the other end of the process no worse off financially than they were going in. The defendant submits his costs schedule and the jury rubber stamps the payment. However, the jury should also be able to decide on punitive damages where the prosecutor's case was so poor that they believe it should never have gone to trial, e.g. the Ewen McKenzie trial
However, when there is a retrial and a guilty verdict is overturned (e.g. David Bain, Arthur Thomas, David Dougherty, Teina Pora), the jury should decide on the question of compensation. Both sides put their case for and/or against compensation as well as stating the amount that should be paid, and the jury retires again to deliberate.
We will never have justice for the wrongfully convicted in this country until politicians with personal agendas are taken out of the loop. Compensation claims in these cases have far too many delays.... justice delayed is justice denied. Unfortunately such a change would take an act of Parliament... and last time I heard, turkeys never vote for Christmas.
PS: I would also change our verdict system to a three verdict system, but that is another discussion.