Forgot to unhook your plug wire before trying to pull the engine, huh? Yup, I've done that before... Here's what happened. The spark plug boot assembly is simply screwed into the center of the coil wire. When you accidentally pulled the boot off, the wire started to come with it and frayed out all over the place. Your high-tension lead (spark plug wire) is composed of several small strands of wire, braided together into one heavier-gauge wire. The several 'small' wires you are now looking at are those individual wires that have come apart.
I'd take your cutters and snip away the frayed 1/4" or so of the spark plug wire. Don't shorten it too much! Then, just screw the plug boot back onto the wire, and you're good to go! If you wind up experiencing ignition troubles later, you may have accidentally tugged the high-tension wire out of the coil itself. In this case, the coil will have to be replaced, but if just the plug boot was torn off, you can fix it as I described above and be good to go. Should you need a whole new ignition coil, they can be had off ebay for about $ 25.00. I:I