The robosigner story while shocking and egregious, has been look at by some judges as "yesterday's news." Homeowners will be sorely disappointed to present this to a judge and believe that he will rule in favor for you.
It is what you do with the "crime scene" evidence that matters. You must check with the Secretary of State in the county where the notary purportedly notarized the document and find out what requirements a notary must adhere to in order to have a valid notarization. Are they required to maintain a journal? If so, you demand to view it.
You MUST make a formal complaint against the notary with the Secretary of State. The SOS can then make a determination and revoke their commission. You can then tell the judge that the SOS (an authority even higher then him) declared the notary improper and the banksters can no longer rely on their affidavits. Oops! Now you are cooking with gasoline!
Also, you must keep the robosigning in perspective. I have seen a case in CA involving California Reconveyance where the notary (Jessica Sneeden) forged the officer's name. Their attorney stated that California law does not forbid notaries from signing the name of someone on their staff (!) as the notary placed here initials near their freshly forged signature. Weird! Needless to say, the notary ended up being rewarded for their courageous service and was promoted to Assistant Secretary of CA Reconveyance. I have seen this promotion of notaries to officer position several times (Chase Home Finance comes to mind--Sanela Alagic). Call your SOS and find out how to take action. You can go after the notary's bond and insurance too.
Dig further and find out who the notary works for. Are they in-house? Do they have the same mailing address (see the state website or call the SOS for this) as the bank or the bank's attorney?
The robosigning is just one proof of fraud, but should not be considered the silver bullet as this bullet is old hat!