Season 5 of Special Forces: World’s Toughest Test got off to a dramatic start when one celebrity had to medically withdraw — and now they are speaking out about the exit. The Thursday, September 24, premiere presented contestants with the challenge of jumping out of a helicopter headfirst into the ocean. They then had to swim back to the dock quickly, which proved to be a challenge for several recruits, and Brandi Glanville suffered lasting medical issues that led to her dismissal. “I over-rotated. I know it felt like my head hit the water, and it was so hard,” Glanville exclusively told Us of her instant reaction. “It was like immediately…