I've done it in swept- and delta-wing jet fighters, but wouldn't risk it in a 747 unless it was a truly "last ditch" maneuver. I can't imagine a situation where an engineless 747 would have too little rate of descent, and the risk of stalling the downwind wing, combined with lack of control authority, would be VERY risky.
That said, realize that to a slight extent that is what we do every time we apply a "wing down, top rudder" crosswind correction for landing. For that purpose (at least to the limits of dragging a pod), cross controls can be an effective tool, when applied judiciously in the right circumstances.