I have been getting the World Queue, splash screen into Error 90002 thing all day since the DDOS and I just tried hitting Cancel as soon as the World Queue window showed up then tried logging back in and I got right in. Could have been perfect timing but, I figured that I was probably stuck in some odd loop and the odds of there still being a queue is low.

To reiterate:

Click on character with the 90002 error.
World Queue window pops up.
Hit cancel.
Try to log in on the same character right away.

Should take you right into the splash screen