No bad, posts 5 to 12 all off topic.
Yes, we did experience negative g in the tin triangle but well before BEagles time. And yes, the pee tube trick also preceded BEagle.
The usual cause of negative g however was a rather rapid push over on the 2E attack. It was intended to be a 0.5 push to level at 11000 feet after a 10k/min climb to be level and steady about 8 miles from the target.
Cautious crews in training might pop early. If you got the pop late however you might have had a steeper climb and a harder push.