Thats exactly like my last question only worded and described way better than me. My sister-in-law says that in her experience, and she's been in the real estate industry for over 10 years five of which as a loan consultant at Washington Mutual, has seen all the lenders go after the deficiency no matter what paperwork has been signed.
She says the mortgage is the promissory note and the homeowner is still responsible for paying back what was loaned to them.

. Things might work a little differently here in New York though. Too many damn taxes if you ask me.
-James K.