Personally I haven't yet imagined a way out that satisfies all sides. The fear of police seems deeply ingrained in the population and no current or former protester believes they would be treated fairly if the movement abandons any of the demands. The government, fearful of reprisal from the ruthless Beijing elite, are unwilling to grant any concessions to the protest demands. The police are also deeply fearful of an independent judicial investigation into their activities, and must maintain a state of disorder, increasing the government's dependence on police so that they will not launch an investigation. It seems like the situation has reached a Nash equilibrium and the whole ship is doomed to continue sinking.