okay this isn't a theory but i need someone to explain something to me..

In the season 3 finale, Lisbon re-dials the last number called by O'loughlin. That was the number of the fake red john. why is this? surely O'loughlin was still contacting the real red john as that is who was tracking down Hightower? 

Furthermore, if O'loughlin told the fake red john the location of Hightower's whereabouts, then how come red johns assasin turned up to kill her?

Please explain!