According to Barreda, he spotted the hole from quite a long distance, but as the tried to slow down 300 feet from it, his bike slid on the wet, muddy ground and hit it full-on.
He was thrown off the bike, and suffered no injury, but the left arm of his handlebar broke off completely. He had to adjust his pace accordingly, and finished the stage only losing 4 minutes after his bike stopped.
His nearest competition was 12 minutes behind him, but the crash removed 1/2 of his lead, and after the stage was completed, he was only 6 minutes 28 seconds
http://www.motorcyclenews.com/sport/2015/january/dakar-stage-seven-coma-claws-back-deficit-barreda-battles-to-finish-with-broken-handlebars/
https://www.autoevolution.com/news/2015-dakar-barreda-rides-120-km-with-a-broken-handlebar-in-stage-7-video-90945.html