A) Possibly true
B) Possibly a bad joke on the most hated man, or an ousted usurper, in the tribe
C) Possibly a disabled man, unable to take part in ‘manly’ pursuits, so was buried, not as a statement of his sexual role, but in honor of the working role he fulfilled
D) Possibly he was a terrible lover, so the women demanded he be buried that way to ridcule his lack of sexual prowess
If I wanted to spend the time, I could come up with other, plausible, scenarios.
Thank God I discovered just how political, and politically correct, Anthro (even way back then...even worse, now) was/is while I was still Lower Division, and still had plenty of time to switch majors to something more objective.
I like the scenario in post #15.
Maybe he had an unfortunate accident — no soft tissues or their outline have been preserved. OTOH, poofs have been found in all known societies...