With an ATC degree I'd say you have a pretty good chance at it. I tried to pursue airfield ops late in my ROTC tenure, after I decided I didn't want to be a pilot. By that time, I was graduating with a poly sci degree and didn't stand much of a chance. My backup was intel, but I ended up getting classified as a manpower/personnel officer due to the AF having some of my information wrong during the classification process. I tried cross-flowing into airfield ops later on, but was denied due to Force Shaping going on at the time.
I was actually able to voluntarily separate earlier this year after only completing about half of my original ROTC commitment (thanks to Force Shaping), and have actually been hired by the FAA as an air traffic controller through one of their public hiring announcements. So it all ended up well in the end.