User blog comment:DevonAndersen/Dan's New Video No Miranda (Carly)/@comment-2208586-20110723185205

Speculation #1:

They will shoot an episode like iWon't Cancel The Show just without iCarly. There are many ways to write her out for one episode. One of them would be for example that she visits her grandfather in Yakima (even though she doesn't like it - maybe because her father is there too) but Spencer didn't go because... Well, it's her grandfather and as seen in iHire An Idiot he doesn't seem to like him very much.

Speculation #2:

They filmed Miranda's scenes already. Maybe it is a subplot with just Carly or Carly and Gibby (since I don't see Noah throughout the whole video) and some guest stars.

Speculation #3: It IS a blooper episode. Maybe they did do a runthrough for it too, if just a little. From what I see there aren't that many people on set.

- I think either speculation #1 or speculation #2 are the right ones.