They were suggesting that they would tidy up the Legs & Co blooper/rehearsal stuff and show them again next year (which i doubt they will). They had only just received them and didn't have time to edit them properly. As these came from the BBC, i am hopeful other clips may follow.
Logic tells me that routines wouldn't always run smoothly and dress rehearsal footage would also be filmed. Its just a case of how much of that footage ended up on the cutting room floor. I guess 99.5% of it suffered that fate, but im happily settle for the remaining 0.5%.