There are over 800 delegates still out there. Trump needs only a few over 500 to win the magic number. He will pick up New York, New Jersey, Pennsylvania and California. He just needs a few more and he did manage to get 6 delegates out of Wisconsin despite the best efforts of Walker and Paul Ryan to beat him by backing Cruz
You may be right and then Trump is the nominee...But that is not what the original question / story is about is it.
Problem is that the Pennsylvania delegates are unbound. So it is really going to depend upon the ground game of electing the right people to be delegates.