Scape Scape:
It's like the scorpion and the frog crossing the river.
Why did the scorpion sting the frog killing them both? It was in their nature...
Yup, and it might still just be a case of the right hand not knowing what the left hand was doing. Then upon discovery and to create plausible deniability, having to amputate the left hand in order to save the head.