Like an avant-garde hipster indie film director, I'm starting at the conclusion and making you work backwards.
It's not that I'm trying to be dramatic...it's just that it seems unlikely that the entire piece detailing the chain of evidence (comprised of information you cannot see because it's been oversighted away) will be done by the end of the day, as promised.
So...we begin at the end.
I can unquestionably confirm that one of SlimVirgin's sockpuppets is User:Sweet Blue Water.
Here are two clues to consider until all the proof is up on AntiSocialMedia.
1: This recreated diff, which was previously oversighted away.
2: Sweet Blue Water's talk page history.
As to the question of Sweet Blue Water being an abusive sockpuppet, you might start by reviewing the comments made here.