See like, what would we say? Creepypasta.com has an absolutely fantastic statement already regarding the event. If people insist we do a PSA or statement I beg that it's brief and to the point, and preferably redirect people to that page. I mean, it's from one of the admins of Creepypasta.com themselves. It's not our place to override and ignore his very eloquently written statement with our own, a day and a half after the fact.
What I recommend is that if Vincent (and other Outreach members) feel its necessary (which it can be argued that it'd be polite to), we succinctly offer our thoughts/wellwishes and redirect to Sloshedtrain's post there. I can't quite articulate how but it seems rude to not to.
EDIT My position, TLDR, is "If we do anything, its put somewhere clearly that this is fiction.". I suggest Newbie Guide, because everyone is supposed to have read that anyway.
"The SCP Wiki is a collaborative writing website centered on fiction relating to the universe of the SCP FOundation."
In bold is more than enough.
[20:31] Devereaux Dexanote: For the rules you could phrase it as "Trying to propagate the idea that the Foundation isn't fictional is against the rules."
^ I'm ok with something like this being added to the Site Rules if people still want it.