SSOOO much trolling in this thread.  Also a lot of people like Tender Wolf who clearly didn't read anything but the title.  Gj +1ing.  I feel sorry for the OP because he has a legit complaint.
There should be something done to stop this.  
My idea:
just make it so the same players/accounts can't team up together in RA over the course of say... a week.  Once you party with somebody in RA, you won't see him again until a set period of time/set amount of faction gained.  That way, even if 4 people join RA team sycronized, they won't be able to do it that often.
Edit: Opps... didn't read the YEAR of the date posted for this.  Just saw the month.  /close for necromancy.
Mods can ignore my posts where I reported a guy since I don't think he's logged in in a while anyway