Belief trumps facts on this point. Cruz’s people did their jobs and then corrected themselves to the voters when they found out otherwise. I also read that Rubio’s and Trump’s people did the same but the mention of Trump was scrubbed and the one Rubio tweeter took personal responsibility which somehow removed responsibility from the rest of Rubio’s team. From now on, screencaps will be better employed during the election season.
So then what exactly did Cruz apologize to Dr. Carson for not doing? That's a rhetorical question BTW.
Fact trumps belief.