I don't know if this has been thought of before, but bear with me.
Why would Joran feel the need to contact Deepak in the early AM just to say he got home?
Speculation
NOT because Joran wanted Deepak to be at ease that he arrived home safely, BUT because he had prearranged a ride with Deepak who at some point was waiting to get a call to go BACK and pick up Joran and Natalee (from where Deepak dropped them off). But Joran went home on his own, without Natalee. For some unknown reason, he didn't need or want Deepak to pick him up, as they had prearranged.
Just another thread to weave in the big mosaic of "nobody knows what the hell is going on"...puzzle.
Tim Miller of Equusearch stating to Nancy Grace on Larry King said that he is excited about a location that they will be searching tomorrow morning.