The party’s national committee is supposed to be impartial during the primary season, period. To claim retrospectively, “We didn’t know he would receive so many votes,” shows exactly why you have to remain impartial. You don’t make deals before you know. You do not align yourself with your party’s nominee, until after you nominate your candidate. To do so beforehand undermines your party’s integrity. It also shows the party’s leadership was entirely willing to stack the nomination process, and expected to get away with it.