You need to speak to a lawyer. What exactly is a “loss mitigaiton specialist” ? Sounds like a term for an unlicensed entrepreneur who is trying to make a buck off your situation.
Run, don;t walk to a a real estate attorney. A realtor is not likely to be of much help, other than giving you an opinion on current price.
Nope, see a real estate lawyer.
Also to educate yourself look up the following concepts:
Deed-in-lieu of foreclosure
Short Sale
1099 Debt forgiveness
Is your current mortgage acquisition debt or did you do a cash out refi or have a second ?