I know two years is a long time for your fingers to be glued together and I doubt they still are. I just super-glued three of my fingers to themselves and a tool to them. I used several oily substances with no results and tried acetone. The acetone is harsh, but it eats through the glue very well. Acetone is the main ingredient in fingernail polish remover. (It may be the only ingredient, I don't know.)
Just thought you might like to know for future reference.