@MauleSkinner : yes, the "hobbs" was still ticking, so I paid for the extra sim time. No, the instructor didn't charge me for the extra "instructor time".
Lesson learned: don't post fun stories about things done in a simulator that are not absolutely training critical. Because no one else has ever done loops or rolls in an FMX to see how it would react.
(EDIT: and if someone asks me if I consider the impossible situation fun, yes I do. I like challenges, even ones which are impossible to win. I understand that not everyone feels the same way)