"The reviewers were harsh on my song and dance, not realising the true finale was back stage mopping up the blood on her costume," Edward told Spy.
Both injured performers were back on stage by Saturday.
"We are like trained athletes, we can have no fear. If Keven Mealamu can keep playing with a broken nose we can get back on stage the next night," Edward said.
Edward and Gordon wrote and choreographed the show together and this week told a women's magazine they were no longer living together and were redefining their relationship.
In the play, Odysseus, played by Edward, leads a rag-tag crew of soldiers home. His sole mission is to be reunited with his love, Penelope, played by Gordon.
Gordon revealed it was almost a case of life imitating art. "Our relationship is on and off at the moment. We are still not living together," he said. "But the thrill of live performances has definitely turned the spark back on."