NCAA 2-5-1h says that the officials can use the monitor to determine "that the shot clock failed to properly start, stop, set or reset or that the shot clock has malfunctioned." It doesn't sound like any of those things happened. The officials ruled that the ball hit the rim, so the reset was proper.
2-5-3c says that the officials shall NOT use the monitor for judgment calls such as a violation.
Seems to me that the on-court officials were correct -- at least as to whether they could check the monitor. I didn't see the play, so I have no idea if they got that part right.
