Sure, I've got an number of things you can try out and see which ones work best for you if the situation repeats:

1. Willing yourself right side up - you said this yourself. This is the simplest one and might work out. If not try something else.
2. Using whatever body parts are available - if you have tactile sensations and a normal dream body, just grab a nearby object and rotate yourself.
3. Create lines from anywhere in your dream body. You can create lines from your hands, eyes, or the center of your body and pull yourself in the desired direction. They can be lines that connect you to something, stretch into infinity or are ropes connected to nearby objects.
4. Change your perspective - I love this one! I remember reading a comment from the female astronaut Karen Nyberg about how she managed her sensations of discomfort from having to walk on a side surface (I'm not sure if this was outside the space station or inside, it would make more sense that she was peforming some external repair work).

In free space there is no gravity, so there is no ground, or ceilling or wall. Anything can be anything. And in dreams it works the same way! I remember it worked precisely like that with the "walk on the walls and ceiling" task. Once you switch perception, the ceiling becomes the floor and problem solved!

These are the ones I can think of right now, if I remember anything else will add it.
Love it! I will try these if it happens again! Thanks for taking the time to help me!