Nope. The evangelicals turned out to vote for the Messiah du' Jour.
Trump likely made some errors here and there but so did Cruz.
And how in the heck does Rubio get a strong 3rd?
If you think about, 70% of the voters voted against Cruz (as well as Trump, obviously).
What amazes me is how poorly Santorum did, considering he won the last time...Iowa voters can be fickle.