This is definitely another possibility. When thinking about it, it does appear this could be what those signs of dropping our are pointing to.......a change in strategy and placement of people.
It may not be an outright drop-out, and considering the fact she said in PR over the weekend she does not consider this finished until all delegates have made up their minds, it would not be a drastic change like it would be to drop out.
If she does drop out tomorrow, she would have made a 180 degree shift from what she said she was going to do (shockingly ignored by the media, but I heard it with my own ears!) while in PR. She clearly indicated the fight was not over tomorrow, but nobody is getting that yet.....
So, if she did drop out, she changed her mind completely in just a few days.