I asked for this 4 times and the situation had gotten more and more out of hand while the FO was refusing to support me. I ended up flying single pilot.
That is pretty serious where your F/O refused to carry out your orders as pilot in command. Presumably the simulator instructor would have required a valid explanation from the F/O?
While there are usually two sides to each story, nevertheless if your requested actions were correct then the F/O warrants immediate suspension from duties and an inquiry constituted. Even though it is only a simulator in this discussion, the sequence should be treated as if it were the real thing - otherwise you may as well all pack up and go home.