woody knew that acting scared to everything would make people think he did not do the murder and so he can get away with killing people and blocky was the first to die.why?blocky is mean to woody so maybe woody wanted payback by killing him but when he was killing blocky he saw something yellow watching woody he thinks it was spony so he pushes sponey to the freezer later thinking spongy is to fat so later he knew it was not spongy