Question juridique clé
Whether the IV office was bound by the cantonal remand judgment and could still order retroactive recovery of pension payments paid before May 2005.
Solution extraite
The IV office was bound by the prior remand judgment; retroactive recovery was not open to it.
Motifs extraits
The 2007 cantonal remand decision was final and binding because the IV office did not challenge it at federal level. Its reasoning and dispositive instructions limited the new decision to a new pension ruling, at most with a prospective limitation, but excluded recovery for the period before the end of April 2005.