I'd string it up, cover the area with loctite 420, then unstring the bow. Put some of the wax-lined butcher paper over the limb, then two thick leather pads (one each on the back and belly) then gently clamp it with a C-clamp. Let it dry overnight.
Epoxy, even the thin stuff, isn't going to get down into the cracks well. The loctite is thin enough that it gets drawn into it by capillary action.
That's not a very bad splinter. I've fixed worse, including a few delams, with loctite and the real bow repair guys (bowdoc and droptine) do it all the time.