Trump is overreacting. And if he runs as a independent just because he feels the GOP party has not treated him fairly and that gives him the excuse to break his pledge, would speak a lot about him as a honorable person. I think he will win the nomination because there are too many people who are sick and tired of the established politicians. But I hope Rubio or Kasich would win the nomination. Because I am not convinced Trump can beat any democrat nominee. But not looking good now for any republican candidate aside from Trump.