It's not the same bug, this looks more like a problem with the instanced server caused by a forced disconnection, you'll have to wait for SE to restart your char or the instanced server, there are just some similarities, back then ppl could use their chars, but they were unable to enter instances, pty and use /tell, that situation persisted over a week, hope it's not the same kind of problem, they sould be able to solve it faster this time, but SE will only start working on it once they notice it, have you sent a ticket?