The Colts have had some issues with how the league is enforcing rules allowing defenses to make substitutions against the no-huddle offense. You might recall that Seattle had some related issues in its game against Arizona. At issue is how much time defenses have to make substitutions when an offense is in hurry-up mode. Some teams go no-huddle quite a bit. The Seahawks simply get out of the huddle quickly. The distinction is an important one because Seattle does not make personnel changes AFTER breaking the huddle.
I'll have a chance to dive into this one later today (possibly tonight). Right now I'm going to do some of the things I never get to do during a season (take my oldest son to preschool, etc.). For more on the matter, see this column by Clark Judge of CBS SportsLine.