There is no other mention in Basil’s letters of Eustathius being guilty of re-ordination.  The Ben. note, however, states that Basil is not accurate in saying that there was no heretical precedent for such proceedings.  The Arians are charged with it in the Book of Prayers of Faustus and Marcellinus, Bib. Patr.v. 655.  cf. also the letter of Constantius to the Ethiopians against Frumentius.  Athan., Apol. ad Const. § 31.