So here is the quote, from Henry Gilroy, in response to how Inquisitors can fly with their spinning sabers:
"There's an A answer and there's a B answer. The A answer is usually my go to easiest answer which is that you have to ask Dave Filoni. The B answer I would say is a longer mythological discussion and it relates specifically to Malachor, and how it is the home of this Sith Temple."