Episode 20 - Why every body died ? Can the future be changed ?

I found a lot of things in this episode confusing, not the least of which is having 2 Hiros! In the present, Parkman was trying to go against those that had made him into what he is. In the future, he was using his mind-powers to help. But what about the Haitian? He was the one that it was agreed upon would flee with Clarie, so how can he be with the organization? I guess I can see how Bennet would "turn," in order to save Clarie, and others like her, but why would Candice, esp since she betrayed Bennet by posing as his wife? I could go on; perhaps that was an "alternate future," or a future without "future hiro" going back to fix things...

I think what happened was supposed to happen, the only reason it wasn't on future hiro's timeline was because it hadn't happened yet so he didn't know about it. This was one of the best episode in my opinions, it told us a ton, and the next 3 or 4 or w/e can only be better.