FURIO
You are mostly correct, BUT YOU COMPLETELY MISSED THE POINT.
Again:
There is ONE, and ONLY ONE, core fact here: He raped a 13 year old girl. If you lose on focus on that point in any conclusion, YOU have no ethics.
As for your point and Law vs Ethics, you are mostly correct.
There is a REASON I said that "justice" would involve the scumbag being skinned alive, but that sadly (but correctly), our legal system makes this illegal.
All decent Legal systems are based on "law", with an intend to establish "order", and eye towards "justice", usually in that order, but not always successfully.
For a legal system to put "Justice" first is 100% sure to fail, and badly. "Order", with an eye towards "justice" , by its nature, prevents huge amounts of injustice from happening in the first place.
Pure "justice" is gang warfare.
Pure "order" is pointless.
Forgetting "Justice" is a failure of ethics (which is the point of this whole issue).
On a side note, "order" can become harmful in and of itself when it becomes excessively restrictive on people living their lives and making a living.
The best systems achieve a BALANCE of these things. Excessive focus on any one of them, even to save the lives of children that could PROVEABLY be saved, will do more harm than good.