Very sad to see this. I think I remember something similar happening around 2010/11 where an aircraft was seized by the lessor at LTN, and before long, they down sized significantly, retiring the 738s previously operated by Ryanair and Air Berlin, and were left with a very small and old fleet of 733s, 734s and 735s.
Assuming they will be able to restart operations from the 10th October, what will the fleet composition be like? An initial fleet of 5 is being reported elsewhere, so will this include (some) of the 737 Max?
I'm also wondering what will happen as far as their route network goes and which ones are likely to face the chop? As an example, I think London will be very difficult for them to re-enter. W6 have already announced that they will significantly increase frequency on LTN-OTP to 5/daily from October, and I'm unsure whether they will be able to afford the landing charges at LHR.