Stringjam, no, super glue is too thin to fill the gap and it's too brittle when set up to offer any resistance to the line slipping thru. Even using super glue on the knot to keep it from working it's way around to the gap won't last but a couple of casts since working the lure and weight will break it loose. Without snelling, filling the gap with another knot before the final tying-on works the best.
tCR, the gap cannot be closed with pliers since there is really no gap, it's the small contact area of the wire end to the shaft that is the problem. The wire has a blunt end and that is resting against a curved surface which is the round wire the hook is made of.