Leaving my Army Reserve Unit?

A couple years ago I enlisted in the army reserve, but then decided that I didn't want to go a couple months later because I wanted to finish college. I told my recruiter and she told me that it wasn't a big deal and that it wouldn't be a problem for me to get out. She even told me that I could enlist later on in life if I wanted to. Well. it's two years later and now I'm looking into the marines. The marine recruiter I am talking to is aware that I enlisted in the army reserve then failed to report to ship out date, and told me that I would be able to get a waiver for it so I could join the marines if I choose to do so (He received this verification from somebody at MEPS). Well, it turns out that I was never completely separated from my army reserve unit (I was igned to Ft. Knox) according to the marine recruiter. He said he was trying to pull my ASVAB score up from when I took it last week, but was unable to see my scores because I am still ociated with the reserve unit at Ft. Knox. I was not aware of this until he told me. It's been almost 2 years since I signed the contract (I signed in late November 2008) and I am still ociated with the reserve unit. I heard that I need to contact my UA (unit administrator) at Ft. Knox to finalize the separation I am seeking since the army reserve recruiter obviously did not do this over a year ago. How would I go about contacting this person? The only advice the marine recruiter had for me was to talk to an army recruiter and see what he or she can do for me, but for obvious reasons I do not think an army recruiter would be willing to help me out in this case. So I ultimately have three questions: 1) What would be the fastest and easiest way to get the separation I am seeking? 2) Who would be the best person to contact and how could I contact him or her (the UA doesn't sound like someone you can just call up and be like "hey I want to apply for my separation" ) 3) In the worst case scenario, would this separation automatically take place after I hit the official 2 year mark of initial enlistment?