So...
The players just got the tar kicked out of them harder than they ever have on the show. Seven PCs versus one legendary opponent that had both Echo Knight and Psi Warrior class features. Matt used both Echo Swap and Action Surge to down Liam's character, autocrit and kill him. Brutal. By the end two characters are dead and another has two failed death saves.
An explosion strong enough to shatter windows should tick off that final death save on Laudna. My guess? Otahan and Imogen will leave and let the other players pick up the pieces. They limp back to Eshteross, get money for returning Treshi, and pay for raise dead spells. So Imogen is the one at risk of being permanently gone.