Kill the leader and those scumbags will self destruct fighting to lead since they are all pu$$ies right now under Negan. Yes I know they are following the comics right now, but any other person being threatened in their house would fight like the Alexandrians did last season.
There's a lot of them that think just like him and aren't pussies at all. I'm not sure if "cut off the head of the snake and the body dies" would apply here.