He was supposedly taken from his mother by the courts at the age of five (I assume because of neglect) and brought up by a white family. He seems to have joined the Marines at the age of 17, which means he was waivered in, something that often occurred because of adolescent discipline problems.
It sounds like his whole life he has been kind of a mess, and this Indian gig is his way of dealing with it.
Interesting. Bump