As you linked before, he was in the ARF paper outfit. Yes he got paid. In fact all the released documents prove is that he was in the guard without being on regular guard duty! This makes the ARF story almost certainly fact.
edit: the document in Mehaffy's original linked page is identical to this one on the Wash Post site:
[link|http://media.washingtonpost.com/wp-srv/politics/daily/graphics/bushNaGuard_page3.pdf|http://media.washing...NaGuard_page3.pdf]
I would say the rapid action to get these documents in front of the press, was a deliberate response to that ARF theory. If the press had discovered this *first* it would have looked even worse for Shrub. I mailed the "Imus in the Morning" producer a pointer to that page - so they passed up a real scoop!