I can imagine you are extremely wary. The one advantage you and your children have though is experience. There is nothing new they can do now as you have all seen their bag of tricks. I am unsure of how much your younger ones understand of what was going on.
I will say though that they did back off, and know that you have been around the block and know the game now. I believe you were correct when you said they read your blog here and saw you were making it public what they were doing and had vast support by others knowledgeable of their tactics. They will understand that after a certain point it will be evident they are harassing you, and there are so many fresh families unaware of their rights, unaware of their game for them to prey on. I suspect they will leave you be now.
Just make sure to keep an open line of communication with those kids (I really cant see there not being one after all the pics you share, like movie night). They prefer families that are already split, or that are weak that they can split. Your family is strong, your extended family here is strong.