No, No, No, You misinterpreted the announcement. It will only be the start of the signs. They can't lose. If it really does end, then they win. If it doesn't end, then they can still claim that anything bad that happens after the big day is all part of the signs of the times. See how easy it is?
Lieder originally predicted the date for the Nibiru collision as May 2003. According to her website, aliens in the Zeta Reticuli star system told her through messages via a brain implant of a planet which would enter our solar system and cause a pole shift on Earth that would destroy most of humanity.