Due to the situation, the leaders were in. In the end, they decided to help neither side. Joining one side at the moment wouldn't guarantee that side would win. Although it looked like the Punisher was cornered, they thought that he would still be able to at least harm Bryce or tire him out somehow.
The best course of action for them would be to wait for a winner out of the two and then for them to act because right now, neither one of the two were good for the vampire settlement.
Now that Arthur was aware that those that were covered in the shadow could use his powers, he decided to go for a different approach. Arthur needed to take out those with the shadow power.
"You are already dead, so there is no guilt inside me when I do this!" Arthur thought as he charged in towards one of those with the shadow powers. Arthur swung his blade, hitting the shadow person from the head down to his feet. The flying Blood blades were still following from behind.