It's pretty easy to explain why FTL information travels to the past. According to this article anyway:
Some people say that FTL is impossible because it is time travel, which violate causality.
But is causality necessarily true ?
There is a interpretation of quantum mechanics under which time travel does not lead to paradoxes: The many world interpretation.
Time travel, in this case, merely cause the timeline to split into two: in one the FTL information is present, and the other it's not.
Therefore a FTL signal containing message "don't send this message" would be sent as it was never received. It would arrive in the past of a timeline where it was never sent, and resulting in it not being sent out from that timeline. As a result there is no paradox.
Is the conflict between FTL information and relativity, or FTL information and causality ?
Perhaps this will clear up as we gain more understanding of the structure of time. Since I am not an expert on this matter, I'd like to hear what others think of it.