They don't usually do that if there's not something to it, at least not that many players and not that quickly. They immediately look at the up ref like they expect the call, instead of looking around at each other first then looking up like they're asking for the call.

Also, there were several very questionable calls that went UT's way. I don't think UT's coach had room to complain. Sure this one call happened to be at a critical point in the game, but win it before it gets 1 point away from match point next time, coach.