Yanking a scholarship wouldn’t fly for various reasons. Just disallow their taking the field if they won’t perform the anthem.
Ban them from playing the field for one year. Actions have consequences.
“Yanking a scholarship wouldn’t fly for various reasons ...”
If a football player refused to enter a game because he didn’t like a specific play, or a TA refused to teach a discussion section because she didn’t like a particular textbook chapter, I think it would be grounds for revoking the scholarship or assistantship. I know state-supported schools like ECU are held to a different standard for the exercise of 1st amendment rights, but as an employee of such an institution, I am certain that my 1st amendment rights do not include the right to refuse to perform my assigned duties.