I have been thinking about the Spinner's Ends chapter. When I first read it I believed that Snape must have known Voldemorts plan for Draco, now I kinda think he was either guessing or using using legilimacy, trying to gain information about what was going on, and that wormtail was really there to spy on Snape for Voldemort. Has anyone else thought this or changed their minds about any other chapters now that we know the ending.