In MHO, things stack up this way. More by random chance than anything else, the February primaries favor Obama. And the March primaries are biased to Hillary. Or so went the conventional wisdom pre super Tuesday, the same super Tuesday that was basically a Hillary Obama draw.
So I am not going to get tremendously excited if Obama does very well in February and will instead wait until March. Because if Hillary can't do well and win the primaries she was expected to win in March, then we can all expect Obama to win the democratic nomination.
If Hillary does come back and wins the March primaries, then the democratic nomination becomes a very dicey subject, possibly going to a brokered convention.
Since the people who vote democratic in the democratic primaries are the decider's, its fruitless for me or anyone else to say what they will do. And why engage in the mental masturbation of writing scripts the actors will ignore? Meanwhile lots of events can happen in 30 or 40 days its going to take for the fog to lift.