You misunderstood what my point was, and failed to read my second post straight afterwards.
If somebody is worrying about too many things DURING a heavy lift, how can this be good for you? If your training has been spot on and you have complete faith in your form, why would you be thinking about anything else other than the lift itself?
And regarding Sticky, he said so himself in many posts, that the form in a lighter lift should be exactly the same as a heavy lift. This was in response to people using heavy weight/max effort as an excuse for poor form.