Originally, Cruz was going to endorse. There’s a picture of the teleprompter for Newt that referred to this having already occured.
Cruz changed it in the last hour or two, and Trump was told.
He only needed to add 4-5 words to hold true to his promise.
Trump has a plan to use the Cruz resistance cabal around October 1st. Look for a Cruz mea culpa and Cruz plea for unity. In the meantime it looks like differing positions have a home and are given voice.
I mean let's face it, if Cruz was a democrat at the DNC convention he would have been dumped in the river with cement shoes, or rolled up in an oriental rug and dumped in a park somewhere.
Trump knows what he's doing.