Picture #7: Identify your wires. Here #1 is the closest to the hood and #5 the lowest, they all are on a different height. Picture #8: Use a large screwdriver to unlatch the clip. There's another one on the opposite side.
Picture #9: Here the rotor with a plastic shield under it. Picture #10: Remove the black plastic shield.
Picture #11: Take a large Vise-Grip and break the rotor. Work aroud the shaft. Not too difficult. Picture #11a : Here a close-up of the rotor shaft. Remove any debris on the shaft.
Picture# 11b: I put the new rotor in but I couldn't push it all the way. So I took my large screwdriver and pry the rotor to remove it and ... Picture #11c: Yes, I broke the new rotor. It was so easy, couldn't break the old one with the same screwdriver! So another trip to the store. It might be a good idea to buy two at the same time and to return one if everything goes well.