wow. thanks for ruining all my hopes and dreams. :bang:
It is often better to dash a dream before it becomes a Nightmare.
Ditto what Dick said along with rotational drag on the rod, tip off, low take off speed and on and on.
Spin stabilization has been used on research sounding rockets since the 40's. there are many ways to induce spin in a rocket while allowing the aerodynamic directional forces afforded by the "feathers on the arrow" to do their work.
Can you give the reasoning behind removing the critical directional correcting parts of the vehicle other then 'it'd be cool"?
If we are going to attempt to push the envelope it's always good to have some sort of basis for the assumption or theory don't ya think. Why Yes! This is rocket science these models are not toys. We can't treat them as such or do things figuring let's just do it and see what happens. That my friend is how mishaps are created...it wouldn't be an accident because just a little research and further thought would have shown the idea is not worth the experimental risk.
I'd say if you absolutely have to try this to satisfy your curiosity do it with a cluster of Micro Maxx motors on a T3 size model. I'd still stay at least 100feet away and in complete isolation.
Might I suggest instead of completely removing the necessary fins, why not reduce them while canting your motors as drawn. Again while doing such experiment they should still be done ALONE as your still going to have some very erratic flight paths