I went to YouTube and left the following comment under the video:
+Saved XMormon: "Many members of the LDS church that are posting to this video are claiming the short containes lies and inaccuracies."
This behavior is not unique to LDS members. This is standard behavior for those who are part of extremist groups with embarrassing teachings and practices. I see the same kind of response from Jehovah's Witnesses when their embarrassing teachings and practices are plainly exposed to the public without any of the spin that Watchtower dresses it with for public consumption.
All such extremists, out of desperation, resort to falsely accusing their critics of lying whenever they critics expose the plain truth about them. You see, deep down the members of these extremists groups know it's rubbish but for one reason or another they live in denial about this and pretend to themselves that it's all true and makes sense. They use all manner of rationalizations, excuses, mental gymnastics and other coping mechanisms to suppress the reality that its utter rubbish. Being in close regular association with fellow group members who espouse the same belief system also helps to give them a sense of validation.
But when they see videos like this the reality that its rubbish is brought to the forefront of their minds, giving them a rude bout of cognitive dissonance, painfully jolting them back to reality - a painful reality that they are presently unable or unwilling to accept - and so, in a knee-jerk fashion, they lash out with the dishonest claim that the critical information presented about their group is malicious lies.