> Also worth mentioning is that the police were very quickly charging him with manslaughter - so quick, they probably had indications something was wrong with his statement even before the sub was raised.

From the linked article:

> Mr. Madsen’s new account was only disclosed on Monday, with the approval of both the prosecution and the defense, although he had given it in court, behind closed doors, on Aug. 12

Sounds to me that his statement was exactly the reason he was charged with manslaughter.