Blindly Following a Puppeteer? (Jeremiah 31:31-34; Romans 5:1-11 (COD Head 3,4 RE 6; LD 7)

One of the criticism of the Reformed faith is that if God chooses us then our wills are set aside.  This means that we become mere robots of puppets who follow the one who pulls our strings.  I guess my first reaction to this is if this criticism is true then I am not guilty for my sin.  So, this would present a huge problem because God does not tempt us to sin.  So, how can I preached a Reformed theology with such a glaring criticism and potential problem?