#Yes, you can
Yes, you can
The sphere does, unfortunately, inherit Wall of Force's vertical orientation, but needing to be vertically oriented isn't an insurmountable obstacle. Here are some ways of rotating the hemisphere:
- Use Reverse Gravity to reverse gravity. Cast the spell a second time afterward.
- Travel to any plane with the 'subjective gravity' gravity trait, such as the Plane of Air. Then you can just decide what direction down is at the time of casting.
- Alter your surroundings to have the 'subjective gravity' gravity trait, for example via the 3.5 spell Precipitate Breach.
Note that altering the way gravity works requires significantly higher-level magics than Emergency Force Sphere.