Ok yeah... the regulations are more clear than I thought, but they still don't say the solve must be penalized.
And I don't think Cameron's solve counts as precedent for this situation, since that was a situation where the solve would have been DNFed had it been caught at the competition. In this case Chris would have been given another attempt.
Just to be clear, I think it would be a perfectly reasonable decision to give that solve a +2 or DNF, but I don't think that that's fair to the competitor, and so I am trying to make a case based on the regulations that are there, even if they don't fully back up such a course of action. I am probably letting my idea of what's fair get in the way of a completely objective interpretation of the regulations.