I was deferred early action and then accepted in March. I did have a slighty unorthodox LOR which I think hurt me originally, and then submitted another from my current employer. I also went in and talked to the director of admissions personally, 3 weeks later I was accepted.
I know Minnesota will keep people on the waitlist as long as the first week of the semester. I've heard many stories of people who had planned to go to William Mitchell, Hamline, etc. and got the call during orientation or the first week of classes. If you have your heart set on Minnesota, plan on going somewhere else and see what happens. No reason to take your name off the list for pride.