He gave his wallet over

without an argument because he was lost for words and felt
terror like he had never felt it before. All he wanted was for
the encounter to end, so that he could be safe again.
Afterwards of course he fell into a terrible depression
because he felt that he had let his wife and his daughter
down by not defending them. He also felt that he had let
himself and his martial art down. The lad was carrying the
world on his shoulders. He had never let his wife down, or
himself, in fact he had never let anyone down before.
Although he was unaware of this, his body reacted exactly
the way it was designed to react, it prepared him for flight.
That was the best option open to him, but contemporary peer
pressure, ego, morality don't comprehend this logic and
wouldn't allow it. He had to stay and meet this threat.