According to Jimmy Burch of the Fort Worth Star-Telegram, Baylor has decided to keep the tarp in place for Saturday's game against UT and let the game sell out in the normal seating. This should bring overall attendance to around 45-46,000, marking the first sellout this season for Baylor at home. I'll say that I am slightly disappointed that the tarp won't be coming off because I think it looks ridiculous and I wanted to see a full Floyd Casey Stadium, but if this means that endzone won't be filled with UT fans, I can live with it.
Those ~500 tickets are still available through Baylor's ticket office, and I'm sure you can find tickets through ticketmaster and/or Stubhub if you so choose. UT fans coming to the game should remember that the student side is general admission seating, meaning that you probably won't actually get the seats your ticket says you are entitled to get. Maybe it's different where the visiting fans normally sit down at the far end, but that's how it works amongst the students.