When Cruz apologized, he did so on behalf of his campaign, some workers of whom jumped on a news report that strongly inferred Carson was quitting.
I get the fact Trump and his supporters are upset at losing Iowa... but to demand a revote and threatening to sue is childish. It belies a complete unreadiness of the office.
I think this is tactically brilliant on the part of the Trump campaign.
For the price of a tweet or two, they basically walked by a trash can filled with kerosene-soaked kindling, and flicked a lit match in.
Instead of all Cruz's people focusing on New Hampshire, now some of them have to go back and put out the fire - while Trump's people can concentrate on NH.