[VitacoreVision]

The girl was not offered a “private screening,” the report noted, though passengers often prefer to be screened publicly anyway to ensure that there are witnesses to the controversial procedure in case of extraordinarily inappropriate fondling or other incidents. As the teen was enduring a “pat-down of the stomach area,” the top of her dress came loose and slipped down to her stomach, according to the internal investigation at least, revealing her breasts to everyone in the vicinity. Analysts suggested the dress had actually been pulled down, a far more plausible scenario.

[ThunderSleeps]

Personnel conducting screens wear gloves. The screener probably dragged his/her hands down the torso, thus putting excessive tension on the top of the garment - pulling it down/off the shoulders. It is supposed to be a pat-down not heavy petting or a caress.