Depends on what kind of stains were talking here. Yellowing or other stuff as a result of improper fixing, no that won't wash out. You could attempt to refix in fresh fix but if it's print out stains it's game over.
But look at it this way, it wasn't a total waste of time. If you have to reprint it'll go much faster because you have recent memory of what needs to be done.
Stop worrying about grain, resolution, sharpness, and everything else that doesn't have a damn thing to do with substance.