I run a warrior/infiltrator on Atamara. I had just returned to my capital to park my unit while I headed off to a tournament that has just been announced. However, I no longer have an option to do so. As I have been to tournaments many time with this character, I immediately headed over to Bugtracker to see if this had been reported. I found bug 0007852, where I learn that the previous restriction on infiltrators attending tournaments had been reinstated recently.
I think that attendance should be based on your main class, not your sub class. Most of the time I function as a warrior - and my honor and prestige reflect that. There is no in-game way I can think of that the sponsors of the tournament would know that I can function as an infiltrator, and thus no reason for them to ban me from participating.
Thoughts?