after not being enrolled for that long. And don't let the missionary exempton trouble you. Those students arrange the hat before they ever leave on the mission and there are specific dates tied the hat it. It is part of a mutually agreed plan - not just leaving and then later deciding to come back.
From my discussions with BYU, they give preference to students who reapply so that they can complete their degree. But, the hatchet do not waive hhonor code compliance and their are academic criteria just like their are for active / continuing students.
Not sure if Cody is married, but that can resolve one potential HC snag.
Harvey Unga, iirc, was able to graduate via a deal where he took classes at the U.
There probably is a solution for Cody - but it may require him to do something he does not want to do.