The remaining criminals won't leave because they don't trust the government. They want to make absolutely sure the government won't hold them accountable for their crimes when they leave. They are well armed and have an implied threat to law enforcement if law enforcement tries to enforce the law.
A nearby rally was held in support of these criminals not being held accountable.
Folks, sadly this is all true. You know that other thread about when you were last ashamed of our country........nuff said.
http://www.reuters.com/article/us-oregon-militia-idUSKCN0V900C