Phillip, do you have any Urac? Some (most) will call me crazy (stupid), but the bow I'm finishing right now has a top limb that has tried numerous times (3 to be exact) to "finish" itself, as yours did. I thought about splicing a new limb at the handle, but I'm kind of (really) stubborn (stupid) and wanted to test the strength of the Urac I just received. I put plenty of Urac on the pieces, fitted them together, and held them with rubber bands while it cured. Then I backed it with bamboo, again using Urac 185.
My curiosity (stupidity) has paid off now, as I'm finish sanding a beautifully tillered (for my stupid self anyhow) 45# @ 29" bamboo-backed-maple bow for my brother. (I don't want to be the one shooting it in case it decides to "finish" itself again.)
Decided to name it "Plan A" as in the status given to prisoners on suicide watch when I worked at the prison.
Also, Dean Torges has a repair-along on his website where he sands out a pin knot that caused a belly fret and replaces it with good wood.
http://bowyersedge.com/patch.html If you're as stubborn (stupid?) as me... this dead horse might just rise to be beaten again