While it is understandable that some victim initially didn't want to release her cell phone video out of consideration for people affected by this accident (everything is understandable when it comes to human emotions, including crimes of passion), there clearly is a strong public interest (I mean this in the legal sense of the term) to get access to each and every passengers' snaps and video recordings. (I bet all eleven of them like it is common practise today were recording during this pleasure flight.) It would be wrong for the investigators to suppress this information.
In particular I would be interested to to see the video that this surviving passenger took on his tablet computer....
Rear LH pax taking a video with his tablet.