Oh, they can, and the coach did, complain. Check out his post-game whine-fest.
http://volleyballmag.com/articles/43527-uncharted-territory
He seems to have convinced himself that they had the edge over BYU at that point and therefore had the 5th set all but wrapped up, that but for the "2-point swing" resulting from the wrong call, they would have finished out the 4th, gotten to the 5th and won.
Also, the TX player is sure there was no touch. Shocker.