Just out of curiosity, how did this happen? Change majors? 2nd degree? Change schools?
Stayed in the same school.... I decided to go ahead and roll with BDCP supply (was still Aero Egr)... As I entered my junior year in AE, my grades were too heavily toying with the 2.7 GPA minimum. I'm not the best student, and was struggling keeping my semesterly grades above 2.5. When the CO threatened to make me enlisted, I decided that rather than play with fire (Great Lakes), i'd be better off switching to business and getting the hell outta there. So I put the request chit in, Navy gave me the ok within a week, and off I was.
I later reapplied for redesignation to SNA and was selected.