What is the effect of a federal district court's order requiring counsel not to provide counsel to a plaintiff in a personal injury case?

Appellants have not identified any right of their own that has been affected by the district court's order. Instead, by their own account, they seek to protect their client's right to counsel of his choice. Ordinarily, "a litigant 'must assert his own legal rights and interests, and cannot rest his claim to relief on the legal rights or interests of third parties.' " United States Dep't of Labor v. Triplett, 494 U.S. 715, 720, 110 S.Ct. 1428, 1431, 108 L.Ed.2d 701 (1990) (quotations omitted).