To the original poster ... can you email me? I believe I'm in the EXACT same situation and would love to compare notes. askmattchun [at] gmail [dot] com

Here's my post which suggests that despite having signed the papers, I still may be protected as you can't sign away the anit-deficiency clause. http://www.avvo.com/legal-answers/million-dollar-question-re---purchase-money-loans--1004548.html?callable=false&published=true