I think some of the easy ways to picture it are releasing as close to your chest as possible, and keeping your grip loose right up until you get halfway across your chest. The better your timing gets, the louder you can snap. Just remember the feeling when you smash. The right pec drill seems indicative of where it happens.
When I snapped the disc so hard one of my tendons hurt the rest of the day (one of my longest shots), my grip felt unusually loose, or more accurately relaxed until very late in the throw. Later than any of my normal throws I believe, I think I just got lucky and tightened my grip just in time to avoid whatever happens when you don't grip soon enough.
I throw Terminators when nobody looks.