Quick Question

After watching the documentary on the Stanford Prison experiment, I was left wondering a couple of things.  First, why didn't the people have the students talk again after so many years?  You would think that the people would have some pretty interesting things to say so many years after it occurred.  Plus, some of the actual reaction might have "worn off," which might mean that they could have a more meaningful conversation.  

Also, why didn't the documentary have any interviews of any of the other participants?  We can probably assume why the other guards didn't stop the main one, but what do the guards have to say for themselves?  

Another question that I have, among the many, is was there ever going to be a prison break or what did the prisoners do right after they were released?  Did they take a day or two to recover, or did they tell anyone about what was going on?  You would have to think that they did something after all that they went through.  Maybe they suffered from almost a Post Traumatic  Stress Syndrome and thought that if they told anyone, they would be taken back to the prison.  This might make sense because at least one person had to be told directly that it wasn't a prison before he would agree to be let go.

Finally, did the experiments have any longerish term affects on any of the participants, guard or prisoner, because you couldn't just think that they could go through all that and then just let it go.