Psystar shuffled its defense this week as one of the attorneys defending the Mac clone builder left its team. A filing has revealed that lawfirm Welker and Rosario's co-founder, David Welker, exited the team for unknown reasons but said he only played a small role in defending against Apple's copyright accusations. The defense member was responsible for filing some of Psystar's more recent filings, including those demanding Apple executives re-appear as witnesses, but said he neither worked with Psystar first-hand nor received pay for his efforts.