Okay, I just did this three days ago for the first time on my SHO. Its a piece of cake. What you need to do is:
1. Pull the caliper off the caliper bracket.
2. Spin the caliper around so you can access the Ebrake assembly on the back.
3. Now, at the end of the ebrake cable ther is a round cylindrical end... a stopper, that rests againste the "hook like thing" that you described.
Take the pair of dikes and pinch between the ebrake end and the "hook like thing" on the caliper.
4. Aggressively pry upwards. This will pull some slack out of the ebrake cable. Enough that you can get the end around the "hook like thing."
5. Once the Brake Cable is out from behind the "hook like thing," follow the cable down to where you see a C-Clip. Pull the C-Clip off with a pair of pliers.
6. Now, the cable will slide out of the caliper. It may need a bit of PB Penetrating oil and an extra pair of hands. Someone to hold the ebrake cable and another to pull and twist the caliper at the same time. Should come out fine. I work 3rd shift and rarely sleep suring the daytime. My name is SHaun should you need further assistance (978)902-5971. Call Whenever i dont care, i've free long distance.
thumb