[justy]

There have been a couple of Fox shows that have jumped network. Family Guy's repeats, as holden pointed out, but I think Grounded for Life jumped to WB 3 episodes into its third season to finish out its production run (season 3: 13 episodes, season 4, 28(!) eps, and season 5, 13 episodes. (I thought Bernie Mac had jumped, but it's still airing new episodes on Fridays at 8. Go figure).

Anyway, there's precedent.