The story was told at the Agudah Convention by Rabbi Paysach Krohn and confirmed by Mr. Werdiger who is the Chairman of the Board of the Agudah. I have not seen any article that refutes this story but would be interested if someone can point out where I would find such articles.
Mr. Werdiger told me that the story is absolutely true! He said the reason why he had YWN take the story down is because some in Korea were upset to learn what Mr. Joon had done and that it might affect Mr. Joon’s career in the future. (Mr. Joon is returning to Korea soon.)