Yes, they should be disqualifed. However, Reince-The Chicken Hearted-Preibus is not known for making bold and strident decisions that benefit the republican party.
I’d call him Reince “The Collaborator” Priebus. A true Uniparty man who lives by the Stalinist maxim “It’s not the votes that count, but who counts the votes” (or suchlike.