The little handle that releases my rear seats so I can flatten them has stopped working on the drivers (2/3rds) side, meaning at the moment I can only flatten the single seat on the left hand side. I could really do wtih being able to flatten the larger section as I need to get some furniture in the back next week. Does anyone know if there's another way to get the release to work, or if there's any way to fix it in situ?

Cheers!