With the decision made, Mord looks around at the bodies and picks out obe who looks like they might have lived 'just' long enough. "Lets get this wagon down that passageway and try not to leave any evidence of our passing. I don't want Argyle talking himself out of this..."
Hopping out of the wagon, Mord moved to his selected body, somehow propped up on it's side with an arm stretched out. Taking the arm by shoulder and hand, he folded all butnindex and middle fingers into the palm and dipped them into the man's own blood. In this way he wrote "Argo" and halfway through the "Y", let the arm fall naturally into whatever resting position it would take.
Squirrels are evil!