The commentaries explain that the first expression of redemption refers to the Jewish people's redemption from tortuous, backbreaking slave labor and endless persecution. The second level of redemption occurred when the Jewish people stopped working for the Egyptians altogether. After all, the Jews were no longer shlepping heavy boulders up steep inclines. They were not working at all it was an extended vacation. G-d wreak havoc on their tormenters.
Freedom is a concept and an ideal that has been thrown around quite a lot over the past few decades.
The message of that decade, one that has stayed with us to a large degree into the 90's, is that to be truly free one has to be able to do whatever one wants, whenever one wants. If we take an honest look at where that path has led our country today, at least from a moral perspective, we can see that somewhere along the way, something went wrong. If I am just my physical body, then freedom for me translates into the ability and the right to get all the physical, hedonistic pleasure I can get out of this world, and no government or religion or ethical standard is going to stop me. I am merely clothed with this physical, temporary casing which will one day return to the dust from where it came. True freedom, says the Torah, is for me to have the ability and the chance to do what I really want to do.