No, he didn’t. Liz Mair ran that ad. Her anti-Trump PAC started months ago and she, like Romney, has supported different candidates at different times in different states to try to stop Trump. Cruz had nothing to do with the ad and didn’t know about it until it hit the media.
This is like thwe german generals who said”I did not know what my men were doing”. Cruz ,we know, is a bad liar. He attacked Trump’s wife and he looks real bad. No body falls for this lying denial. No body.