i'm not sure here, but i would do something like lst. only instead of tying the plant down, i would tie it standing straight up. and the leaves are most likely at a 90 degree angle because they had to strech to get some light. once the plant is back to normal, i bet the leaves will return to normal too.
Depending on why your plant fell over, you may want to brace it. A straight stick next to it poked down enough to be sturdy. You can use twist ties to loosely hold it to the stick. It'll heal itself, and the stick won't be used anymore. Once you've seen the plant mend itself to a nice strong stem again, you can take the stake out.