I think "time expanded" means exactly what you said. Producing programs for TV broadcast is frustrating. Everything has to be a very specific length. After editing for content and putting in commercials, they might have needed to pad out the running time a little bit. Usually they add in a couple deleted scenes (like Ace Ventura: Pet Detective), but apparently sometimes they have to slow it down a bit to get it the right length.

I'm kind of surprised they don't just cram in more commercials...