What Causes Headache And Vomiting After Rope Squeezed Around The Body?

Hi, so today my brother was playing tug-o-war, and he was going one on one with someone, and he had the rope wrap around him. He then was losing and more people joined in on both sides, from front and behind. So he was basically getting squeezed because no one realized that it was wrapped around him. That was around 2, and at about 4:30 you could see an abrasion of where it was, but it wasn't that definite, and on one part of him though. But now at around 7:30, he called with a headache and him vomiting on the side of the road from him car. Yet he just got his car cleaned out, and he said it's probably from the fumes. Would it be internal bleeding? Did his spleen rupture? Or is this just a simple case of nasuea. Please help.