Is "Admiral Mike Franken" breaking the law with his campaign publicity?

I thought posing in uniform, participating in political activities in uniform, and using your military title in political advertising were all prohibited activities.
This retired admiral seems to think otherwise.
What do the folks here on RallyPoint think?
Addendum: Paragraph 4.3.2.1 of DoD Directive 1344.10 seems very relevant, to my eye. Others may disagree.