[jitterbug13]

I think there are 20 chapter members (maybe more) and only eight and one alumni were involved. From what I got from the story, they were suspened and reinstated by USC. Omega's national office (in Atlanta) on the other hand, have suspended the chapter for probably a year (or more). They can still be active on campus, but under a close watch with nationals and the alumni chapter(s).

In other words, USC can still recogized you on campus, even though your chapter is suspened or on probation by the national office. That's how they are still able to build the house.