One thing I haven't seen discussed is whether JMK comment that it was an accident and 2nd degree, not first will hold water with the DA and speculation that he will try to plea bargain for that.
Personally, I think he's misinformed (or in deep denial). I don't see how this murder could ever be tried at anything less than first degree because of the injuries and the manner in which they were inflicted.
Just get him off the street.
After conviction, leave a rope in his cell. Put a noose in it. Send him the video....Hang'm High.
I think Karr just said that cause that is what he wants his defense to be. He knows good and well this wasn't an accident, but he is trying to save face and if he really did do this crime he is going to try to make himself appear a bit better to prevent getting the death penalty or more time.