And you know this how?
He is a true conservative and that spells doom for the GOPe if conservatism wins. They felt the same fear in 80 and 84. Trump can be discounted as anomaly and they can conduct business as usual.
And there have been stories both ways but (source disclaimer) -
http://theresurgent.com/the-republican-establishment-is-rooting-for-donald-trump-over-ted-cruz/
http://www.cbsnews.com/videos/donald-trump-other-gop-members-target-ted-cruz/