Yes I read the article. They don't make it clear how the neighbor knew about the video. When I originally read the article I believe it said her husband told her and the article has since been updated to remove that to possibly protect their identity. Even if it wasn't the husband of the neighbor who was interview it's clear the neighbor who was interviewed knows either the men that were at the house or one of their coworkers who were shown the video, in order to know such details about the video.
If no one wants to believe that the information about the video is true because it was reported by the Daily Mail and likely taken from SM rumors, than I guess the information about the neighbor hearing screams should be treated the same.
As quoted from the DM article.
The disturbing picture that has now emerged includes the claim that the men took cell phone video of Spurlock performing a sex act on each of them and one neighbor's chilling recollection of hearing screams in the night.
Locals who spoke to DailyMail.com asked not to be named for fear of retribution as an atmosphere of fear has descended on the small street of ramshackle rentals and fixer uppers to which Spurlock went with the men that night.
According to one, 'Sparks is the sort of guy that if you don't do what he wants he gets mad, he loses it.
'They all took advantage of a drunk girl that night and then the other two left her alone with Sparks.
'They took cell phone video of her. The guys were showing it around at work. She was so drunk she couldn't speak, it was like she couldn't speak English.'
Surveillance footage shows Savannah Spurlock entering suspect's home and never coming out | Daily Mail Online