I had my gall bladder removed via lap in 06 (well before my vsg). This is almost exactly what my symptoms were. I felt exactly like I had been run through with a sword from the front through to my back near the center of my stomach, just below my sternum and rib cage, and out through my backbone.
Had had a specialty high fat ice cream, and about 1 am one of the worst pains I had ever had. Went to the emergency room and they gave me a pain med, and did an ultrasound and saw the gallstones.
Was on a NO fat of any kind diet for a few days until surgery. Fat causes the production of bile into the gall bladder and can trigger the attack. Was able to get the surgery scheduled pretty quickly. Lap surgery in to the hospital in the AM, and out that Afternoon. Similar recovery to VSG actually. Light meals and lots of walking for about a week. Same lifting restrictions.
Twisting is possible, but more likely in a revision. But I also had an uncle who had one of his intestines get twisted in his 50's too. The sleeve does make the stomach skinny like the intestines so I guess it is possible.
But lots of people have gall bladder problems after VSG. That would be the #1 thing to make sure they check for.
Hope this helps - Mack
CAUTION: Make sure Brain is engaged before putting Mouth into gear!!
Starting Weight 354/ PreOP 335/ Current 249/ Goal 195