No recourse on the IA's who have signed-off on the inspections since the Airworthiness Certificate was revoked.
If they knew of the revoked Airworthiness Certificate at the time of the sign-off, they would knowingly have been in violation of the regs by releasing the aircraft for flight. It is assumed that they didn't know, and acted on good faith, but a case could still be made that they didn't check, if an FAA rep wanted to be that anal about it and interpret the regs literally.
The fact that there wasn't recourse doesn't mean that the IA's who signed off the annuals, or anyone who flew the plane afterwards, wasn't in violation of the regs.
Fortunately for all concerned, this was treated as what it is .... a paperwork error not affecting safety of flight!
