Im currently trying to grasp what it could be that is holding them off...
Provocation makes no sense. In Rosenbaum and Hubers case Kyle exhausted all other means of defence, thus his right to selfdefense should be intact, especially in Hubers case even if he murdered Rosenbaum in cold blood. Beating a man lying on the ground to death with multiple strikes with a skateboard, after all Kyle not spraying fire once on the ground and blocking with arms instead of immediately shooting or butting Huber indicates not wanting to shoot him, is not citizen arrest or stopping an active shooter, at least not here in Germany. We can thus rule out full guilty pretty safely, provided America has comparable laws on selfdefence and defense of someone else.
Großkreuz (bigcross) nailed his own case to the cross. I don't remember Mcginnes.
The safest bet right now is either an intimidated jury or a progressive subhuman that snuck in.