I wouldn't recommend turning Rho Gammas in. They are just trying to help their PNMs, even if in an inappropriate way. A lot of what happens at IU rush is not in the Panhellenic spirit. I think that is why the NPC has chosen IU to feature on their website with a message board for parents to complain about recruitment. No other college in the nation has been chosen for that honor.
http://sororityparents.com/2011/01/s...y_bloomington/