This is spot on with how I feel about it Stui.If an innocent man is convicted of a crime and as a result a number of victims of similar crimes are able to feel symbolically vindicated and the organisation that tacitly supported those crimes is forced to reassess things, is that a miscarriage of justice or a good outcome?
In the circumstances, I'm inclined to say both
If there has been a miscarriage of justice, then that's a matter of major concern to us and our society, regardless of who the wrongly convicted person is. (BTW, anyone been watching "Undercurrent: Real Murder Investigation on 7? A very interesting case).
On the other hand, I have had direct contact with victims whose lives have been utterly destroyed (and in some cases ended, by suicide) by the abuse inflicted by Catholic priests. So, if one particular Catholic priest should have to unjustly bear the retribution for this, I would call it karma!!
It's a case where both legal and natural justice are at work, it seems.