I think the bowl was in scramble mode... they didn't announce that Georgia Southern's opponent until late afternoon/early evening and I can't imagine their first choice was a rematch between two divisional opponents from the same conference.
My suspicion, Temple said we need time, but won't be able to pull everyone together until tomorrow and the bowl said, we've got to get it scheduled and moved on. After that they're probably getting push back from the conference (which loses out on money) and fans/players about saying no.