User blog comment:TylerSurvivorFan/Survivor: Worlds Apart Power Rankings - Week 2/@comment-26047483-20150306022606

While I agree with your placement of Will as 4th in his tribe, I think his move was brilliant and shows he's playing this game a lot harder than I at least gave him credit for. Voting for Nina would be the worst for him, as it would've left him with no allies and arguably the weakest member of the tribe. Voting for Jenn would have saved his ally Nina from going but made him a target of Joe & Hali, which would be bad for him with Vince already clearly prepared to vote him soon. By voting Vince he kept himself in better standing with Joe, Jenn & Hali, who are most likely fine with Vince leaving, while keeping ahold of his ally Nina, who is probably out before him if they go to TC before a tribe swap. By keeping his standing with the other three intact he should be able to last longer with them, even if he is number 4.

Just my take on his decision.