You're talking about the UH-Air Force game that was moved to Dallas, right? Don't know about the kids' hearts, but a big problem that day was that the TS Allison ended up going up to Dallas and raining all over the game which made it very difficult for the then Air Raid Cougars against Air Force's option attack.
Looking at both teams' schedules, the only option to play this game on a different date would be a week after the conference championship game (same week as Army-Navy, Dec 9th). It's doable, since it's a non-conference game and there's nothing going on at the Alamodome between UTSA's last home game on November 18th and the Alamo Bowl on December 28th.
The big issue for having the game this week (among many, many others) is whether or not UH would be able to get their gameday equipment there in time. Considering the plan was for them to come back, my guess is that the equipment is not there with them. With Harvey about to head back into the gulf and dump more water on Houston, the freeways may not be passable in time to get the equipment to San Antonio.
Anyway, I completely trust the AD and coaching staff to have the students' best interest in mind as they decide. Lot more important things going on than football right now.