I went through something similar a few weeks ago, but it was a CRW entanglement, not your standard malfunction. It spun me like crazy though. One thing I think you should think about that is much more important than G-forces, is where your handles will be during a spinning mal.
I was spinning rapidly on my back, and my cutaway handle was up near my right shoulder. When I practice my handle pulls (multiple times before each jump), I close my eyes, follow my lift web up from my leg strap and find each one. This was invaluable while spinning on my back. After I chopped, my reserve handle (which was a pillow, and is being changed to a D handle) was floating behind me. I had to do the same thing, follow the lift web up from the leg strap to find it and pull.
Since this was a CRW jump I had thick gloves on as well. If there is anything I can pass on it is that you should practice finding your handles with your eyes closed and not expecting them to be in their "normal" location. Just because my experience was a CRW wrap doesn't mean it could never happen to you; I know plenty of people who suck at tracking and you could very well end up next to someone at deployment time who sucks at tracking and has an off heading opening...