Marijuana: Did anti-pot-tax group break campaign law with joint giveways?

Update: Rob Corry has responded to our interview request about the Colorado Ethics Watch complaint against the No on Proposition AA campaign. His comments follow our original post.

Over the past month or so, the organization opposed to the marijuana taxation measure Proposition AA has staged rallies in Denver and Boulder at which attendees were given free joints. But did the way No on Prop AA reported about its expenditures break Colorado campaign-finance law?