Just to add a data point here folks. My ET itinerary now shows "Completed" instead of confirmed in the ET website. I no longer have the ability to select seats, nor cancel or in any way modify the ticket.
The payment screen at the bottom is also now blank..... I'm sure it's only a matter of time until this is cancelled. I've also been charged the full amount on my MC. Hopefully, we get the refund back sooner rather than later.