I collected this from someone’s yard last year. It has a very long trunk and a short twisted trunk. I could split this at the base make a ‘shohin’ and a ‘literati’-isque separate trees or just keep it as such. Suggestions?
Oooh, nice color. That might be an 'Imperial Thai Delight' if the flowers darken as they age. I agree that the long branch feels out of place. I don't know enough about bougies to say whether they can handle being chopped in half like that. Possibly. Your other option might be to make that cut, but do it 3 inches higher so you have a triple trunk. Do bougies air layer I wonder? That might warrant some research.
It's most common that the original nursery puts 2, or looks like 3 individuals in a pot to make a better looking item for sale. They would have probably grafted together, but still have some roots going in separate directions. Wash the roots clean with a hose and see if there is any wiggle. Or you might be able to see where you can saw straight through and have roots on both or all three individuals.