Wouldn't the autopsy of the negro have showed marks from the stun gun? I thought that was in the report

But, if so, how could the dead negro and the killer cop BOTH have 2 prongs from a taser on them?
I don't think they were. We talked about this in the other thread.
jon_berzerk came up with the theory that during the struggle, the taser wires became entangled with the officers body. You can see in the video that the taser wires are wrapped around the officers wrist.
If the suspect (Mr. Scott) triggered the weapon during the struggle over the taser, it is the officer that would have received the brunt of the shock.
It would have also left him stunned and disoriented.
It may also have caused an involuntary release by the officer of the taser.
That would explain both the officer exclamation that he had been shocked and his belief the suspect had taken his taser.