First off the, the center offcial(closet to the play) should have rotated up, closer to center court, to get a better look---You have to move with that play, and get up high...Any call he makes from that position is a guess.
TCU players seems to step on the line, or dribble the ball on/over the line, before contact---which of course, is a b/c violation.
Verdict: Official is out of position badly on this play. Big no-no right there. If you stop the video at 4 seconds, it looks as if TCU players right foot is on the line....
To me, its just bad officiating/positioning, more than a bad call.