Within the context of it being an existing contract they wouldn't want to break, yes. The problem with a home&home setup was always that Hughes couldn't provide CU with a reasonable guarantee back.
CU can simply sell more tickets at Mile High is my point, and so can CSU for that matter. I suppose if CSU now thinks they can fork out the money to cover the difference to host CU on campus, then by all means let us play in FoCo.