Let's stop with the "disavow" nonsense. Staying on topic is called message discipline. It hurts a campaign to go off message and spend time disavowing every moron who supports or pretends to support some part of your message. I don't want Trump to disavow comments or supporters, and I don't want Cruz to do it either.
Note: I believe Cruz would be the best president among all the candidates who were ever in the race. However, Cruz cannot win on the first ballot at the convention. I strongly suspect that a contested convention would go to Kasich, Jeb, Christie, Rubio, or someone else who supports Amnesty and Obamacare. Trump is my #2 choice overall, but he is the only one with a real chance to avoid a contested convention, so I'll be voting for him - he is far better than anyone else who could get the nomination. It doesn't help Free Republic or America to act like a true conservative is the second coming of Hillary or like Trump's current campaign rhetoric about a competitor he wants to beat (and whom he used to praise) is actually true.
No, that's not gonna happen. But Trump may not win on the first ballot, either.
I strongly suspect that a contested convention would go to Kasich, Jeb, Christie, Rubio, or someone else who supports Amnesty and Obamacare.
If there is no winner on the first ballot, the GOP-e will start moving their "compromise" candidate to the fore.
However, at that point, it will be time for the Cruz and Trump delegates to unite and crush the establishment initiative. Say this happens on the 2nd ballot.
Then, on the 3rd ballot, we might see a Cruz vs Trump head-to-head showdown. And you would have your winner...