Loctite SuperGlue3 Remover:
soak the dried SuperGlue and keep working it with a stiff brush. I needed to reapply the Remover many times before most of the glue was dissolved and removed with a cloth. It was not perfect but a great improvement. I removed a spot from a pair of Polyester trousers but I am not sure it is worth the effort?
Roger
January 2014
I don't think you can - it will have soaked deep into the fibres of the material and set hard - you will need an army of tiny little men with tiny drills and chisels.