No democrat came out after Page testified and demanded she testify before an open session. Republicans said she was very helpful and provided new insight. They maneuvered her testimony to come after Strozk had testified before the American people. My guess is that he had no clue she was going to be helpful(turn on them). This all feels like a well orchestrated act for major gotchas.
Major question, when did she turn? That could be a major point.