Ha, thanks for the confidence, man. I think it would take me 3-6 months, but I could break 16 minutes again, sure. I don't think I will ever be able to run like I used to though, because I needed the trainers and facilities far too much. I've got friends still competing at a fairly high level post-collegiality, but most of them are part of solid training groups like NYRoadRunners, Boston, or ZAP.
I decided sometime ago that my goal was Boston in 2014. But if I do it, I am going to do it right -- quit playing rec sports, start eating right, cut back on drinking, and get my weekly miles closer to 100 -- I am just not ready for that at this point in my life. I qualified for Chicago and New York on a whim in London last year on four weeks of training and three long runs, but because of this, it hurt.
Set your calenders, and we'll do it together.