The episode title of “One Man Down” seems to indicate Vinny leaves in this episode of Jersey Shore.

One Man Down Summary: Snooki clashes with Jionni (like always.)Vinny mulls his options about whether to leave or not.Original air date: January 12, 2012 on MTV. Jersey Shore Season 5 Episode 2

The Jersey Shore news on the web includes The Situation possibly spilling that some of Jersey Shore is staged (Live with Kelly), Snooki putting her name on some bedazzled headphones, and whether or not Vinny is leaving the shore for good.