I don't know the exact answer to your question, but I think you did what was best. When you are not comfortable, the truck would be safer. In general, I am always more concerned with pine trees falling in high winds, than a camper flipping when setup.
My guess based on observation, is that the trailer is safer with the stabilizers down camping. I have seen a parking lot of 6 Aliners flipped, but we had a 100 MPH gust that day and consistent 80+gusts for hours. None of the larger campers moved that day, and none of the Aliners had their stabilizers down.
The only time I have seen campers that were camping flipped was in a F1 tornado.