Except the Blackfeet quickly killed him, ripped out his guts and threw them in Colter's face. In that way he was less like Rudy, and more like nightmares.
Though judging from his outfit, he might have just seen the intestines as an accessory.
Rather than killing Colter outright, the Blackfeet decided to make the kind of miscalculation that you would think only happens in movies. They asked Colter how fast he could run, to which he replied "Oh, like, totally slower than Native Americans" (we're paraphrasing a bit). With that knowledge, they stripped him naked, spotted him a 100-yard head start and told him to run. They were literally turning his impending death into a race, with the prize being Colter's scalp.
One problem, though ... Colter lied. He was actually a very fast runner. After two and half miles, he had left all the Blackfeet behind except for one. He then stopped and waited for that man to catch up. When the Native American lunged at him with his spear, he grabbed the spear point with his bare hands, broke it off and impaled the man with it. But the Hollywood movie style exploits were just getting started.
And thus, the first three-legged race was born.