Cruz hit twice on the Caucuses with the phony flyer and then the phony announcement without checking with the Carson campaign before spreading the word. Cruz is a snake. A slimy sleazebag.
Politics is taking advantage of the terrain and using it to your best ability.
Don't think for one minute that Trump would not have done the same thing. He has used tactics just as "sleazy" in his business dealings. It is naive to think otherwise.