Really, would it be that awful though? I think it would be a sad day for college football myself (USM has a storied football history despite the ridicule they get on this board) but they struggle to raise money to field a team each year. Their 25,000 fans would still show up each game, they could still play the 2 or so BCS teams they play each year, and their baseball team would be a lot more successful because they wouldn't have to rely on guys like Papelbon who train their in the winter to donate a Bowflex.
Over the last 5 year I hold DSU in higher regard, and that's with USM winning their CUSA championship. They'd kick the snot out of DSU.
Of course you've got the governor and a lot of higher-ups now who claim USM, so it won't happen, but it should. It would be the best thing for all 3 D1 schools.
And by this I mean FBS D1AA.. not FCS.