Sawyer did interviews with Manson and Amanda Knox, as well as mock documentaries on 'Satanism'. Because you "write what you know." and it takes one to know one to spin it right. See Nancy Grace

The operative word 'spasm' seemed to cause Britney to go into a different pose and when she spoke the word 'weird', if that wasn't a trigger word to shift into an alternate personality..............then yes, what is going on here? Music and smells trigger deep memories, strangely enough. Smells contain a 'genetic memory' of a sort as a warning. So a memory of a smell can be used to trigger a subconscious response....(and the consequent rubbing of the nose ..and '...ewww....'......) as the shift is occurring.....that response itself having a trigger word ie 'spasm' or 'weird' for example. The mention of her relationship put her in the 'vulnerable neutral' position that is susceptible to (post-hypnotic) commands.

This would all be dependent on the theory that Britney is a Disneyfied Hollywood f*ckdoll Product aka a CoCoBot.