I SOLVED THE AMID THE RUINS SLIDE SITUATION!
Ok ok so Vince appears ONLY if you leave with Danny. Want to know why? Because of you listen carefully in the campfire: Vince: "I wont leave (or something) because Danny told me thats its best to stay together" Russel: "Danny? Good thing thay asshole was killed before Shel and Becca joined" Danny as we know rapped so probably is one meets with Clem and you know.... Or two he rapes Rebbeca or something (doubtful) BUT if you lef with Justin THAN it depends who was left dragging the body in Wyatt's story! Wyatt or EDIE! Correct me if im wrong!