That's the only thing that comes to mind reading the transcripts and looking at his "artwork" (which he knows was being copied, since so many say "COPY THIS").
On a more gruesome note, in the transcripts Malvo says the Home Depot shooting was from 132 yards, and he was positioned across the street at the Wilston School. That was pretty obvious from the start.
These documents don't show that Malvo's "insane," they show he's a thoroughly twisted and evil psychopath who should be eradicated from the planet post haste.
His target sector sketches and range cards are more artistic than those of many more talented shooters I've known. But he was not a particularly good shot, and if he's typical of those forces unfolding against us, those of us with serious skills and experience along such lines won't be losing any sleep to worries about being outmatched or equalled.
-archy-/-
The defense claim is that Malvo was insane because he was unduly influenced by Mohammed. If Malvo was insane, then so were all the Nazis we executed after World War Two. After all, they had been subject to influence.