It wasn’t CNN that tacked the “vote for Cruz” on the end and it isn’t CNN’s “personal ambition” he is referring to.
If a campaign thought a candidate was making moves (and the media hyped it - ????? - if it walks like a duck....) that looked like he was suspending his campaign, it would have been derelict of them NOT to use that information - ESPECIALLY as it was caucusing time.
It's a caucus. And even if it weren't...