I think he changed his mind on Cruz when Ted's true colors showed- and that was in the Spring of '12.
Given Rand's own ideas and actions, I don't even know that Ron would support HIM. And I would agree.
Neither Rand nor Ted are libertarians. They just showed up to the meetings and said stupid things like, "Oh, my; I am learning SO much" (like how to fool people into thinking they mean what they say...)
We had SOME proof, but RNC does not care about Rules n Laws- they just break and then change 'em to suit whomever (not PAUL).