Really? They announced that the players were safe and stable. They then confirmed it was likely related to training they underwent. After that, it takes time to figure out what exactly went down. Was it just the training? Was it forced dehydration? Was it due to the temperature of the training facility? Did all 12 have the flu? Did all 12 take the same supplements?
I'm not saying the athletic department is awesome when it comes to dealing with the press and the public, but cases like this do take time to clarify and sort through. I'd rather have them take a bit to figure out what happened, rather than saying "This was an accident, and nothing negligent/criminal happened" and then turn around a day later and say "Actually, the coaching staff knowingly withheld water from the players, and purposely overworked them." It may still happen, but hopefully not...