I cannt solve the problem at hand. But I've noticed that AI Medics often seem to be facing the "wrong" direction even if they perform real first aid in-game. If this is a cutscene, you may set up the injured soldier and medic in the correct angle before you give them playMoves/switchMoves. Apart from that I can only think of doWatch, doTarget and such commands. But they are unpredictable at best.