(1) Article was withdrawn minutes after publication on SA (and then re-appeared). Whatever you make of this.
(2) Heavy selling volume on the stock the two days prior to attack.
(2) indicates group activity with advance knowledge of attack. Sometimes SA author is just shill/proxy. The author didn't really write the article himself/herself (even though he/she certified to SA otherwise). Other SA author or even hedge fund wants a piece (usu. negative) to be published without real identity revealed. Sometimes simply to boost impact (because someone doesn't want to be the guy/gal who keeps on churning out something negative that raises question of bias.)
Just author one or two short articles and gradually you might just receive this kind of request from others. If it's likely a hit piece, you get the chance to profit from others' work while potentially making a name for yourself. When you cooperate on this kind of matters, you could build a network with future profit potential for yourself.
(Not everyone cooperate on this kind of things. Some chooses to be independent and original. Some validates the content of third party work before consent.)
Inexperience traders should particularly be aware of this practice.