Brought it to a armor party. For anybody in the future, we used CA Stick Fast glue on the crack, and reinforced it with a piece of ABS plastic. Going to use Sharpie Peel-Off (http://a.co/fLaliVB) to cover the crack mark.
Here is the armor now:
I did not use the Sharpie Peel-Off yet. It's sealed very well, just need to cover it up.