LOL. That is a radical revision. One day 65-35 in favor of Cruz, next day 65-35 in favor of Trump. methinks the Cruz numbers of the past week have been fiction.
Back to the radical revision, to the extent that shows momentum (it does, I think), Trump is in even better shape than Silver claims with his baked "estimated probability of winning" number.
Nate Silver was manipulating minds, trying to change perception. Karl Rove, BOR etc were using Nate Silver graph and propping up Cruz.