So what you're trying to say is... with Albert and Uroborus gone Model W might actually recover completely?
Model W to Ouroboros is Albert's creation. What I reckon that Model W as Weil, would recover completely on its own as an even more powerful entity were it megamerged with the person that wishes to become the King. Ouroboros is the merger of all Model W and is the ultimate Biometal. Ouroboros is thus likely to be able to be used in a megamerge as well.
However, Albert is able to become King without merging with Ouroboros by employing his A-trans in connection with Model W's soul eating to establish True A-trans, so Model W's own "ressurrection", as the game calls it, is stopped at the Ouroboros stage. Remember that Serpent's merger with Model W is just a certain stage in its development, only the first "final key" was used, the true final key remains elusive and Serpent became only a shadow of the King.
With Albert gone, Ouroborous can be recovered and used for Weil's resurrection.
Of course, all of that ties in with why Thomas thought Albert was wrong and if Model W is influencing Thomas or not. Which is unknown until a third ZX game arrives.
I thought their souls were stolen.
????: Prometheus... Pandora... Your centuries of anger... suffering... hate... and insanity along with your battles against other Mega Men have given me the data I need!
Furthermore, when the same thing happened to Vent, Aile and the Raider, the process did not kill them. The Raider died of fear, nothing else. There's also something to be said for Grey/Ashe wishing to rescue them after they collapse.