"Humans are driven to explore their history, to rediscover forgotten lives and times. For deep down we have always known that our past... is often prologue."
Emmet is substantially more pragmatic and chooses the commercial rewards made possible by the longevity potential evidenced by the now reforming alien. Convincing the remaining two members of the team, he stages a coup which is eventually thwarted by the alien and a panic-induced cave in.
The severely wounded husband and wife, finally reconciled through their shared adversity are trapped and in dire straits until the alien coats them in his preservative, allowing them to be revived and made physically whole roughly a 1000 years in their future, in a world which their wisdom allowed to become a cooperative human-alien world.
"They say what you send around comes around. Perhaps, that is true, even if it sometimes takes... a thousand years."