You have to ask yourself a question at the beginning of the short sale.
I am willing to negotiate on the banks terms. Or, am I going to take a more aggressive negotiating posture from the begining.
More aggressive -
1. RESPA request.
2. Forensic Loan Analysis
3. Litigation prep
4. Hiring a lawyer and making legal demands
5. Compelling the lender to negotiate in good faith.
Less aggressive but perhaps just as effective
1. Choosing your workout option such as a short sale
and working with a Real Estate Broker who has closed dozens of short sales and working with a lawyer who can protect your interests.
Then if you are not able to reach terms you find acceptable, then stepping up to a more aggressive position.
How to negotiate a short sale.