Interesting discussion. You've probably already seen this video, but it does show some of the control functions of the various control surfaces during pre-flight (except the leading edge flaps, of course). From what I can see, there may be some upward reflex in the flaps used during certain maneuvers. There is in the pre-flight check.

In the roll pass, I think he's using ailerons and elevons. I can detect some deflection in the elevators. Good cobra footage too.

Su27.mpg (7.5 Mb - no sound)

And some others I'm fond of for obvious reasons.

rtp-cobra.wmv
rtp-double_pass.wmv
rtp-roll_loop.wmv
rtp-tailslide.wmv
rtp-takeoff.wmv
rtp-taxi.wmv

They look like mine!

Right click and Save Target (or Link) As. I will keep these online for a week.

Daren