OK, he called it dirty tricks and deceit. See the video at http://time.com/4203730/ben-carson-ted-cruz-caucus-dirty-tricks/ . And later on he gave the “By their fruits you shall know them” quote, suggesting that Cruz is not Christian.
So, what’s the problem? That’s how he sees it and a good tree doesn’t bear bad fruit and lies and deceit are bad fruits. Whether Cruz is a Christian or not is between him and God, but, it’s hard to reconcile lying with his Christian faith. Thou shalt not bear false witness against they neighbor comes to mind. Cruz has some nasty people working for him and listening to Glenn Beck - is unconscionable.