I was the one who told Feif Un this story. I recently spoke to a relative of mine who learned in Torah V’Daas at the time, and asked him about this story. He said he never witnessed such a thing, or heard about it.
I asked my Rav about it, telling him what my uncle said. He double-checked his source, and confirmed it – Rabbi Reisman shlita said the story over in one of his shiurim. He said he has a transcript of the shiur, and will give me a copy. When he does, I’ll let you know exactly when he said it over.