No, this is most likely fatal for the Cruz campaign. This is only a couple hours old, and is already as viral as viral can be. I suspect by noon tomorrow, Cruz will be down in the low single digits in Iowa, and by noon on Tuesday he'll be announcing that his campaign is over.
This is worse than the Howard Dean blowout. At least they dude waited until he won something.
The only possible explanation is that Cruz got talked into hiring some former Romney campaign people. Those creeps are famous for sabotaging campaigns from the inside. Maybe Glenn Beck had something to do with it.
Can't wait to hear the excuses tomorrow.
And there is a BIG difference between a spontaneous exuberant scream, and a deliberate mailing that demeans and insults potential voters.