here is Law 10. Labbé is not on the field of play, but in touch. Retake kick. Let me know the clause in law 10 that disallows this. There is no stipulation the keeper must be injured. Any eligible player can be a kicker or a keeper at any point in a shootout as long as an allowed player rotation of eligible kickers is maintained. Jim Allen wrote an “ask the referee “ column on this exact scenario. His take was that all the ref could do was put the incident(s) in the match report and let the organizing committee decide.