The Milgram experiment shows how authority pressure works, and obedience to perceived authorities (which is so highly praised in UBF) can be dangerous. In the experiment, the authority was not very high compared with the authority of somebody who claims to be "the servant of God" and the one God has ordered to be your shepherd.
The Asch experiment shows how group pressure works, and how it leads to conformity. Next to authority pressure, UBF uses group pressure a lot, e.g. by their sogam sharing sessions and conferences. Again, the group effect in UBF is much higher than in the experiment.
If you can produce such extreme effects even in the situation of these experiments, how much stronger will these effects in a group such as UBF? We all know it.