I've done that repair on a 35 year old Shakespeare bow. I put the riser in a vise, pulled on the limb (carefully)to spring the crack open, and poured all medium density super glue into it I could. In my case the crack went all the way through so I just let a bunch drip on the floor. When "full" of glue, I let off the pressure and put a c-clamp on it. Don't use the accelerator, you're not in a hurry here. It's shot 100's of arrows since. I would recommend, however, covering the glass (masking tape should be fine) and cutting a couple of blocks the shape of the limb so you can clamps squarely and not damage the glass. As mentioned above, you have nothing to loose, the bow's already broken. When you shoot it after the repair, be sure to wear glasses and perhaps a heavy coat until you trust it.