DVS more or less disappears later on without much explanation.
DVS first appears mid-way through Season 3 in the episode Who's The Microphone Assasin? When Lahey warns him about J-Roc pirating his music and he shows up ruining J-Roc's concert by firing off his gun. He later apologizes and joins J-Roc's Roc Pile and manages his rap career all throughout Season 3.
He was still playing a fairly big role in the career management game, as seen in in the episode Rub 'n' Tiz'zug where he tries to convince J-Roc to get arrested to further his 'rep'. J-Roc succeeds but only for the short term, as in the episode If You Love Something, Set It Free (Episode) it's found out the entire crew has been hiding under J-Roc's trailer after J-Roc only got sentenced to community service.
DVS is still managing J-Roc`s career and is involved in the 'grocery ganking' operation, but mysteriously disappears halfway through the season with no real explanation given You Got To Blame The Thing Up Here (Episode)
None that we know of.