I don't think so. We had a lengthy conversation on this subject on a different thread last night. The language of some state statutes is very specific about this ... to the point where my company's legal department did a thorough review of all the laws and regulations in the states where we operate, and had the company even change many job titles and descriptions of our capabilities in some of our marketing materials.
I had a lawyer friend tell me that he refuses to even give out one of his business cards in a state where he is not licensed to practice law.
I don't think this guy should be fined $500 for what he did, but I understand that he may have previously been warned with a "cease and desist" letter from the Oregon licensing board.
But it may have been so broad and vague as to challenge his very right to challenge engineers by whatever definition.