Unless you seriously got the vibe that things weren't working out at all between you and any of the girls there, I doubt you were released. Maybe they felt that since you were the only PNM there that they had ample time to get to know you and just decided to let you out early. From my experience (little though it may be), rush is really structured and everything is down to the minute, but COR is much more laid back and the actual time frame is pretty loose.
I just CORed into my chapter a couple weeks ago, and it took me more than a week to hear back from them after my COR event. There might be some paperwork technicalities, or maybe they're waiting to have a meeting to vote. Hang in there!
