Is it magic? Only explanation that makes sense...

DomoSapien: While I would certainly suggest that the ~20-30 thousand people logging in during prime-time indicates that there is no game-breaking malfunction with the client, it's possible something else on your end was updated as well. Additionally, there were some Windows updates in the interim. While we try our best to ensure the client will run on as many machines as possible, it's hard to guarantee that every possible hardware/software combination under the sun will run smoothly without issue.

Either way, the good thing is that you're back in-game, and you're able to enjoy blowing stuff up! Fingers crossed that the issue doesn't rear its ugly head again. See you on the battlefield