“Possibilities...”
Actually I think that Mubarak told Obama to go to hell and that he’s NOT about to step down (and Mubarak has plenty of supporters, including the military that knows full well what happened to the officers when the Shah was overthrown).
Now, rather than looking even more idiotic, he’s trying to catch up with events.
Obama would LOVE to see Mubarak go tomorrow, but he’s powerless to effect that, and is trying to not project that powerlessness to other US friends - so that he can still get them thrown out.
This would be a great time for North Korea to start banging some pots and pans.