Florida and Michigan tried to buck the system, which was unfair to the states that did not. This was shitty, but I agree with riverdaughter, the idea that they need to apologize is ridiculous. She quotes Matt Yglesias (emphasis mine):
Chris Bowers sketches out a plausible and appealing scenario in which Barack Obama wraps up the nomination on May 6. Among other things that would be good about such a scenario, it’s worth noting that at this point the main obstacle to a satisfactory resolution of the Florida/Michigan situation is that Clinton continues to be in the race. If she drops out and endorses Obama on May 7 or shortly thereafter, it’ll be easy for Michigan and Florida to be “forgiven” in late May and allowed to fully participate in a rubber stamp convention in exchange for promising to never do it again.
Our primary system leaves some states without a say in who becomes the party nominee. It is disenfranchisement on a massive scale. Also, certain states have an even heavier say in who the final field of candidates for the nomination will be. This is a profoundly undemocratic process. So while it was unfair to the states willing to sit in their cages and wait to be let out to vote, the real issue is how we go about picking a nominee.
What we have in place now is a sham.