Nooooooooooooo... my arena run glitched and now it seems that I'm permanently locked out from arena until it gets patched.
If you have an arena match get stuck and you've got two losses, I suggest quitting before something times out. Don't wait and hope for your opponent to quit. I don't know if this will make a difference, but if you try to wait it out and it's you who crashed you're guaranteed to be locked out.