Snooki's been dancing with pot plants. Vinny Guadagnino quit the show. Now comes news that Mike "The Situation" Sorrentino has also packed his bags and gone.

A source told 'Us Weekly' that "Mike walked off the show. He's so over the whole thing. I don't think he's coming back. Everyone in the house is so unhappy."

The macaroni rascals returned to their native soil after a tumultuous few weeks filming Season 4 of the hit MTV reality show in Italy.

They're back in Seaside Heights, NJ to begin work on Season 5, but with the departure of Vinny and now maybe Sorrentino, and with big questions being asked about Snooki's state of mind, production could be in jeopardy.

TMZ earlier reported that 'DWTS' contestant Sorrentino's been antsy for a while and told producers that he doesn't need the show anymore.

Meanwhile, after the videoof Snooki drunkenly dancing with a pot plant went viral, her ex-boyfriend has expressed concerns over her welfare. According to 'The Daily Mail'Emilio Masella thinks 'Jersey Shore' is turning Snooki into an alcoholic. "They are killin [sic] her liver. That's not the nicole I knew! Poor girl."

Talking about the video, in which cameramen are visible at times, Masella said it's "a total embarrassment. I blame Production. They won't learn till she hurts herself," he added.

'Jersey Shore' Season 4 premieres Thursday Aug. 4, 10PM ET on MTV.