At the risk of "pontificating" about this subject, I would wager the vessel will be declared a constructive loss. The vessel has a major problem being twisted as she rolled. Can one only imagine what havoc such a deformation has taken within the structure - door frames, cabinets, plumbing, a/c? Further exasperated by the huge interior "shopping mall."
Carnival Corporation faces millions of dollars in losses, and perhaps years of litigation over damage claims and loss of life. Carnival has speculated they face US$40M in insurance deductibles, and as much as US$95M in revenue loss, even if it can be repaired.
The Costa Concordia was built by Fincantieri in 2006 at a cost of over $500 million. So I would speculate Carnival's Loss Control will survey the vessel, call in the "experts," pencil out the math and make a "fix" or "scrap" decision, based on the the book value of the ship.
It appears that Dutch Smit and Salvage is doing the salvage. Smit is the household word in "salvage," and apparently have equipment in place already to keep track of the ship's movement, ready to begin removing fuel oil as soon as Wednesday Jan 18.
The Concordia is nearly twice the size of the Titanic, and salvage operations will be fascinating to follow. See also the Cougar Ace:
http://www.oil-electric.com/search/label/Cougar%20AceAnd this will be a true test of the notion of
"Assumption of Risk" passengers sign, most likely without reading or understanding it.