For a moment, it seemed Donald J. Trump thought he had gone too far. The moment passed.
Shortly after publishing, then deleting, a menacing Twitter post about the wife of Senator Ted Cruz, Mr. Trump quickly corrected himself late Tuesday — by adding more colorful language and punctuation to his threat.
“Lyin’ Ted Cruz just used a picture of Melania from G.Q. shoot in his ad,” Mr. Trump wrote in the slightly revised message. “Be careful, Lyin’ Ted, or I will spill the beans on your wife!”
Mr. Trump appeared to be referring to a recent ad from the “super PAC” Make America Awesome, which showed Mr. Trump’s wife Melania, a former model,…