Here is my take on the twitter accounts.
All of the stuff I saw on that topsy site (except for the new fake post today) under the name "Sierramaeee" was actually posted by SL before she changed her name to f4ggg0t and then cccairuh.
These posts went back to around May 2011, and maybe further, but that site only displayed to that point. I dont know if that is when she created her twitter, or if she had another name before that.
I dont think the twitter accounts going "POOF" has anything to do with us. I think someone in LE realized the fake account that popped up in the past 24 hours and made all postings by that name dissapear.
I dont understand twitter though, so i have a question. When you change your handle on Twitter, are you actually changing your account, or just your display name?
Because the post was under the same name SL used previously, with the same profile picture, but it didn't appear on her curent twitter page. This makes me believe that someone created a NEW account and made it to look like it was her.
Im not sure why that would lead LE to wipe all history under than name though. I would think they would just contact twitter and have that new account wiped. Maybe a mistake by someone at twitter.