I think the whole point of Terminus was to show that you can't turn your back on ANYONE anymore, not the living, not the dead. There is no sanctuary, it's total Lord of the Flies, society ain't ever gonna be like it was. It is truly "Butcher or Cattle". I think this will change completely the way the little group interacts with others.
Then... add in the doc with his "I might be able to fix this" and you have polar opposite mindsets. Something has to give.
Plus, as with the Governor, we did not see the guy Rick promised to kill with a red handled machete actually die - we saw him go down. But he was on a roof - as long as the door isn't opened, they may not be walker food.