Can we invoke the 24 hour rule? Van Jones says he doesn’t know how his name got on the list. The truthers (and Beck, Fox, the Times, etc) will either find further evidence that he supported them , or Van Jones will issue a more detailed denial.
In 2004, the 9-11 MIHOP / LIHOP (made it or let it happen) theory was very strong in monbat circles. Check DU back then. That doesn’t prove Jones signed the petition, but it would not surprise me if he had.