The more stories that come out about Tuiososopo the more it sounds like Manti was a legitimate victim of this. ESPN has a story about him doing this to someone else. Now it also appears that despite being the victim of the hoax, Manti also embellished the story on his own for the cameras. He then continued the lie after figuring out it was a hoax and he probably done that because of embarrassment. He knows he embellished and he thought continuing the lie would make things cleaner not realizing this would get out.
If you're on spring break and your girlfriend is dying of cancer, do you fly OVER the city where she's dying to get home to Hawaii?
According to some of his teammates, he didnt really treat her as his girlfriend, he just played that up for the cameras. Maybe she was just another (fake, imaginary) sidepiece to him that he talked to on the phone and didnt really love her. He flew home instead of seeing her cuz she was just another chick. But he played up the dying girlfriend angle to the media cuz hes a media whore. Like I said, he definitely embellished ALOT.
This is EXACTLY where I am: He thinks of this girl as nothing more than a sidepiece, albeit he probably enjoys talking to her on the phone and emailing her. It's probably a nice enough distraction from football, he gets to have a girl tell him how awesome he is, but he doesn't really have to care about her or put in much work. He gets "duped" because he doesn't really give a crap about her; he doesn't catch the holes in her story because her doesn't really care that much. So she gets sick, and she dies, and he gets to go on television and play the poor lovelorn boyfriend, and everybody loves him all the more. Score! He plays it up to the media, and he loves it.
Now he gets to tell the SAME media folks that he got "bamboozelled." (more love! more attention!) Sure, if willful blindness is getting bamboozelled, I guess he could fit in this box. Whatever.
Guy is a weirdo either way.
Anyway, that's my take. He wasn't in on it. He just gleefully went along for the ride. So he was in on something.