If the Administrative Law Judge determines that the documentary proof and other tangible forms of proof submitted by the parties are sufficient to permit resolution of some or all of the factual issues in the proceeding without the need for oral testimony, the Administrative Law Judge may order that all proof relating to such issues be submitted in documentary and tangible form, and dispose of such issues without an oral hearing. In such an event, proof in support of the complaint, answer, and reply, may be found in those verified documents, in depositions on written interrogatories, in admissible documents obtained through discovery, in other verified statements of fact, documents, and tangible evidence.