According to Drudge, the president of Cartoon Network is stepping down:

I am sure you are aware of recent events in which a component of an Adult Swim marketing campaign made Turner Broadcasting the unintended focus of controversy in Boston and around the world. I deeply regret the negative publicity and expense caused to our company as a result of this campaign. As general manager of Cartoon Network, I feel compelled to step down, effective immediately, in recognition of the gravity of the situation that occurred under my watch.

That seems like a huge over-reaction. A better resignation might come from inside the Boston Bomb Squad unit.