This is just part of the yad Hashem involved in the story. Rav Eisenberger was saying that since this tragedy was shelo al pi derech hateva, the yad Hashem was more intricately involved, because it’s like a neis.
This tragedy has sent a shock wave throughout klal yisroel. I don’t even live in NY, but I am traumatized by this. As a father of little children, I can’t even begin to imagine the pain R’ Nachman and his rebbetzin are going through. It’s yadua that anyone who feels any pain from a tragedy, it’s because HKB”H wants him to get a message. Rabbosai, let’s take the message and improve our ways.