I do not know what Kimberly sent you. A gripe I have with my peers is giving out partialy correct, partialy wrong, or just plain bad advice. 2008 credit was not a a real credit but a loan, 2009 is a tax credit. There are rules for both, but different. 2009 does have a three year stay rule. 2008 you have to pay back over 15 years.
Your question was not addressed, you do not have to pay 2008 credit back if your loss was greater than the credit.
Your basis is what you paid + expenses to buy+major improvements(not carpet and paint)+selling expenses.
You will need to fill out proper IRS forms. Your expense to sell will be greater than the tax credit. The 245,000 is the start of your basis. It is for interpretation whether you have to deduct you closing costs from the basis that you already deducted on your 2008 return. Confused? Your costs to sell will be 16,000, which means your loss will be enough to cover the Tax Credit. Good Luck! Fellow Realtors, this is available on the Web, research it.