Of course not, when you are part of the establishment, there is no level to which you won't stoop to for power.
Remember, with Cruz, the ends justify the means.
That's what happens when one believes he is "The Chosen One"; rules, mores, and ethics are mere handmaidens to "The Goal".
History is replete with these types of leaders, and things normally don't go well with the ones who follow them unreservedly.
Thankfully, the GOP won't allow Cruz to get that far; he's nothing but a useful tool for THEIR goals.