I know one thing that is a disaster for me, to take a peek where the ball went, before the cover gets torn off.
Dear bluebird,
I have spent time studying the phrase, and the science as to why so many golfers at some time will say, "I looked up", usually preceded with some form of alarm and/or profanity.
If you or your associates have had this happen when a camera was being used, IMO you will find that what REALLY happened is that YOU LOST YOUR DYNAMIC BALANCE, PROBABLY THE LOWER BODY. The natural reaction (most of the time swinging BEYOND the stability limits) is for the head to REFLEX and come up.
A good analogy, is a bodies reaction to tripping over a door jam, or berm in a parking lot etc. Just picture what your body does in response to this significant, unexpected instability.
So, the 'proof' that you lost your balance, and DID NOT look up too soon, will simply be the REACTION OF YOUR LEGS, mostly the LEAD leg. That is why I asked if you have captured any of these 'looking up too soon' events to reinforce OR refute my hypothesis that 'no you didn't, (and I believe can't) look up too soon, you LOST your lower body dynamic balance'. Again, probably by trying to swing TOO hard, by FORCE, rather than TORQUE.
One last thought, if you or a friend seem to be having a problem 'looking up', please just try to set-up with increased lower body dynamic stability margin, and IMO, the problem will disappear.
Sincerely,
art