Yeah, that is sort of what I was thinking at first too. It just seems strange to me that the Hasbro reps would even bring those figures along, let alone set them up at first, only to take them down before any outlets photographed them. I would think they would be more organized than that, to show up and say "oops, we weren't supposed to bring these figures, better hide them". Then again, you never know .
The one thing to keep in mind is that there are two audiences for Toy Fair - the press (like our intrepid JediDefender reporters) and major chain toy purchasers. The second group is the group Toy Fair is REALLY all about. This is where Hasbro makes sure that every major retail outlet is going to have PLENTY of this stuff come April 2nd and the display is to show those toy buyers what they're getting and how cool the stuff is and how well kids will respond to it, etc....So stuff shown to the press could be (slightly) different to the stuff shown to the reps from the major retailers.
Another possibility could simply be that the toy buyer for a chain like Walmart came through after the StarWars.com pics were taken but BEFORE the press came through and before the Walmart toy buyer left, they said "Hey - can I have a couple of those?" and the Hasbro rep gave him a couple of figures but didn't let him take any main characters.
I know, I know - sounds a little too much like a conspiracy theory - but the Hasbro reps are salesmen/women and they're going to do whatever it takes to keep the guy/gal from WalMart happy. Anything is possible, you just never know...