If the district won't build another stadium (I don't blame the voters for not wanting to spend the money), then the only option is to play somewhere else. That might change their minds, however, the small number of people that attend the games (or are parents) may not sway the vote at all. After the Allen ISD fiasco, no one is going to be in a big hurry to build a stadium that's not absolutely necessary. And then, they won't be spending 60 mil.
In fact, I wonder if the problem is not the stadium itself but a proposal for a stadium that is Allen-esque, but with cured concrete.