In an idle moment.
Surely big G is 6.674 28 (+/- 0.000 67) x 10-11 m3 kg-1 s -2. ? If we had negative G, the problems of Boeing would seem trivial since the world would fly apart and the sun would go out. Big G, by a still unknown mechanism, causes little g, that ~9.8 m/s squared we enjoy at the Earth's surface.
Detritus coming off a glider's floor or cows getting bigger to the point our shoulder harnesses are tugging, is serious stuff. I find it hard to imagine being near the surface, especially flat out, and even letting the controls go forward a micro-tad. I think it would be one heck of a mental battle to Yo-yo, even if you knew it was the procedure.