So I've been thinking about this. Super Tuesday has a few different states that have the potential to be open to a Joe Biden surge if he really smashes SC out of the park. The biggest prize there is Texas, but there's a fair few delegates in states like Tennessee, Oklahoma, Arkansas, and North Carolina. If he runs the southern states on Super Tuesday and hits the delegate threshold across California, it's likely to push him into a strong second place. Notably, there are no Rust Belt states going on Super Tuesday.
March 10th, though, could be very Biden friendly - Idaho, Michigan, Mississippi, Missouri, North Dakota, and Washington. I'd say Bernie has Washington in the bag, but the others? If Biden grabs 4 or 5/6, it will give him that fabled momentum, maybe enough to carry him to the convention. That's not what Bernie wants.
I noted Bernie was campaigning in Minnesota and I felt that's a mistake. If he wins Minnesota, Klobuchar is done and that helps out Biden and Bloomberg. But if she wins that, she might delude herself into staying in longer, which helps him. He should be in Boston, going for the knockout against Elizabeth Warren.