But while debating/fighting we just missed another general section (pointed by Tom Kiesling and Mike Evans) that describes the categories included in the F3 category (Radio Controlled Flight). And in this section, one sentence says it all as you can judge by yourself.
1.3.3. Category F3 - Radio Controlled Flight
This is a flight during which the model aircraft is manoeuvred by control surface(s) in attitude, direction and altitude by the flier on the ground using radio control.
F3A - AEROBATIC POWER MODEL AIRCRAFT
F3B - MULTI-TASK GLIDERS
F3C - HELICOPTERS
F3D - PYLON RACERS
F3F - SLOPE SOARING GLIDERS
F3H - SOARING CROSS COUNTRY GLIDERS
F3J - THERMAL DURATION GLIDERS
F3K - RADIO CONTROLLED HAND LAUNCHED GLIDERS
F3M - LARGE AEROBATIC POWER MODEL AIRCRAFT
F3N - HELICOPTERS FREESTYLE
F3P - INDOOR AEROBATICS
F3Q - AERO TOW SOARING GLIDERS
F3R - PYLON RACING MODEL AIRCRAFT WITH LIMITED TECHNOLOGY
F3S - JET AEROBATIC POWER MODEL AIRCRAFT
And here, this is explicit. Any device able to actuate control surfaces independently of the flier is forbidden. So gyros, stabilization systems, autopilots are prohibited.
It is good that we finally clarified the situation that was very unconfortable from my point of view. It will be easier for the CIAM sub commitee to do a clear recommendation.