Right, but that would have to have happened before the message Morrow receives about the death of his daughter, which is on W-Y letterhead and is apparently ~ 8 years into the mission. ( The math doesn't add up because it also appears to say he'll be returning in 53 years. That's why I wrote 'the 2060s' instead of a specific year. )
I'm still thinking he could be a synthetic -- going by the first film, a stealth synthetic wouldn't be out of the question. But notably we didn't get to see what color he bleeds. I guess his 'obsession' reminded me of what David was doing in Prometheus, in addition to his other mannerisms.
Ah, cool I hadn't picked up on the date of the letter, only the content. So am I right that conventional wisdom is that W-Y merged around 2099?
He could be a synthetic, or maybe the length of the trip and relative isolation tipped him over the edge (or he was always a weird stalker type!)