Just spent a lot of tiem researching what that was and according to DVD commentary, the writers...
((OOC Wanted to see how absurd they could get with Martha and the Doctor doing something without advancing the story. ... So this is the best I have for you.))
"Oh it was... nothing really. I mean, at the time it was huge. But shortly after that we were transported back in time to the 60s which was a bigger adventure.