Ghostcrawler posted last night that Ritual of Summoning would be fixed today. Nethaera posted small, but important, patch notes saying that it had been fixed. "Ritual of Summoning no longer has a 2 minute cooldown and will now function as intended."
However people are reporting that it still isn't working correctly.
Ghostcrawler now comes out and says that it'll be fixed sometime later today. "We are still on target to get this fixed today (Tue, Jan 27). I did not mean to imply that it would be fixed when the servers came back up."
Left hand, let me introduce you to right hand. Right hand says things like "We'll fix this today." Left hand says things like "These are the patch notes for this patch, which is now live." Right hand should tell left hand that not everything is live just yet, and update the patch notes accordingly.
Now that I got my tenses all screwed up, we'll update when Ritual of Summoning actually is fixed.
Update: It is now fixed, for real this time.