Maybe others know better, but wouldn’t he bleed out almost instantly, unless someone tied a tourniquet on his legs?
I'm reading
And Then You're Dead:. In the chapter about being attacked by a shark it's stated that if your leg is torn off, a ragged separation, the arteries are separated at an angle and you'll bleed out quickly. If they're cut through cleanly, think guillotine, the artery's natural tension pulls it into the remaining flesh which closes around it and stops, or, at least slows, the blood loss. Who knew?