From the autopsy, he did not die of an overdose, but rather of hanging - appears he looped the vacuum flex around the top bannister, then slid down the stairs u

From the autopsy, he did not die of an overdose, but rather of hanging - appears he looped the vacuum flex around the top bannister, then slid down the stairs until it cut off blood flow - "Cause of Death: Hanging". That said, you're quite right that the cocktail he had in his system disinhibited him to the point of no return.